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    The Concept of 'Alea' in Boulez's 'Constellation-Miroir'Author(s): Anne TrenkampSource: Music & Letters, Vol. 57, No. 1 (Jan., 1976), pp. 1-10Published by: Oxford University PressStable URL: http://www.jstor.org/stable/733804

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    I S Candetters

    JANUARY

    1976

    VOLUME LVII

    No. i

    MUSIC

    AND LETTERSwas

    founded

    in

    I920

    by

    the

    late A. H.

    Fox

    Strangways. It

    was continued by

    the

    late

    Richard

    Capell and is now the property of Music

    and

    Letters Limited,

    a

    Company Limnited

    by guarantee

    and

    comprising repre-

    sentatives

    from

    the Royal

    Musical Association

    and Oxford University Press

    and

    others.

    BUSINESS

    &

    ADVERTISING ADDRESS:

    44 Conduit Street, London, WiR oDE.

    EDrrORIAL ADDRESS: Faculty of

    Music, 32 Holywell, Oxford, OXi 3SL.

    THE

    CONCEPT

    OF

    'ALEA'

    IN

    BOULEZ'S

    'CONSTELLATION-MIROIR'

    BY ANNE TRENKAMP

    THE USE

    of chance techniques by contemporary composers has

    bewildered

    more than a few theorists and

    driven others to silence.

    Some

    musicians

    would

    agree

    with Edward T.

    Cone

    that,

    since

    chance

    music

    has

    no

    definitively

    ordered

    sequence

    of

    events,

    it can

    only

    be

    described,

    not

    analyzed.,

    Others

    would

    agree

    with

    Anthony

    Cross:

    The

    preoccupation with chance

    on

    the part of composers like

    Stockhausen

    and

    particularly

    Boulez,

    pinpoints

    the

    chief problem

    faced

    by composers

    of

    the

    so-called post-Webern school: with

    the

    abandonment

    of

    tonality,

    of

    all

    pre-existing

    language,

    how

    is

    the

    composer to achieve the meaningful articulation of form?2

    The

    problem

    of chance

    in

    music

    is

    particularly crucial for twentieth-

    century

    scholars.

    In

    the

    past, major

    musical

    issues

    have

    been avoided

    by negative

    means:

    tonality

    became

    atonal;

    themes became

    athem-

    atic; rhythm

    became

    arhythmic.

    Only by linguistic feats such as

    'open

    form', 'circular

    form' and

    so on has form not become 'aformal'.

    By examining

    one

    composer's

    confrontation

    of chance the relation-

    ship

    between the

    articulation of

    form

    and

    chance can be seen from a

    more positive viewpoint.

    Boulez

    has

    made a

    distinction

    between chance and alea

    in

    his

    speeches

    and

    essays.

    For

    him,

    al6a

    is the use of

    chance under

    highly

    controlled

    circumstances. While this

    distinction

    appears

    on

    the

    1

    'Analysis

    Today',

    Probklms f Modern

    Music, ed.

    Paul H. Lang, New

    York,

    I960,

    p.

    38.

    2

    'The

    Significance of

    Aleatoricism

    in

    twentieth-century Music',

    77ie

    Music

    Review,

    xxix

    (I968), 322.

    I

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    surface to

    be nothing

    more than linguistic hairsplitting,

    the

    signific-

    ance of

    the differentiation becomes

    apparent

    in the analysis of a

    work such

    as 'Constellation-miroir',

    the third

    and central movement

    of Boulez's Third Piano

    Sonata.3

    Close examination of

    some ideas

    Boulez wrote about at the time he was composing the sonata and an

    analysis

    of

    'Constellation-miroir'

    make clear

    the

    necessity

    and

    validity

    of the

    distinction.

    In

    addition,

    an

    analysis

    of this movement

    illustrates

    one meaning of the term 'open

    form'.

    An earlier work

    by Boulez,

    Structures or

    two

    pianos

    (I 95I-6),

    illustrates the composer's

    attempt

    to serialize rhythm, dynamics

    and

    attack

    in

    addition

    to pitch. During the completion

    of Structures,

    however,

    Boulez was

    already re-examining the

    validity of

    the strict

    serial

    procedures

    he

    was employing

    at that

    time; his

    writings show a

    concern with this problem until the composition of the Third Piano

    Sonata

    (c.

    I

    960).

    First,

    Boulez

    challenged

    the

    conclusions

    serial

    composers

    drew from Webern's

    works and the

    manner in

    which

    they

    'extended' his

    procedures:

    The

    model universally

    chosen

    is Webern: and

    in

    his

    music the

    principal

    matter

    for

    study

    is

    the

    organization

    of the

    musical

    material.

    Certain conclusions are arrived at, and

    these are

    then

    deliberately

    developed by

    a

    process

    of extension.

    With

    real

    frenzy

    we set about

    [serial]

    organization as

    if

    we were on

    the

    threshold

    of

    undiscovered

    worlds ... Webern organized only intervallic relationships; we now

    subject rhythm,

    tone-colour and dynamics

    to

    [serial]

    organization.

    All

    this serves as

    fodder for the monstrous

    multiple

    organization

    which must

    be renounced forthwith

    if we are

    not

    to

    condemn

    our-

    selves to deafness.4

    Second,

    he

    questioned

    the

    relationship

    between the

    serialized

    elements

    and

    the

    perception

    of

    the

    total form:

    Each system,

    carefully

    worked

    out in its own

    terms,

    could

    only

    cohabit with the others through a miraculouscoincidence. The works

    of this

    period

    also

    show

    an

    extreme

    inflexibility

    in all their

    aspects;

    elements

    in

    the

    'magic squares'

    which

    the

    composer,

    with his

    magic

    wand, forgot

    at

    the

    birth

    of the

    work,

    react

    violently

    against

    the

    foreign

    and

    hostile

    order

    forced

    upon them; they get

    their own

    revenge:

    the

    work does

    not achieve

    any

    conclusively

    coherent

    organization;

    it sounds

    bad and

    its

    aggressiveness

    is

    not

    always

    intentional.5

    These

    are bitter

    thoughts

    from

    one of

    the

    technical

    masters of

    'total serialism'. What Boulez specifically attacked was the applica-

    3 Only

    two

    of the proposed

    five

    movements

    have

    been

    published:

    'Trope'

    and

    'Constellation-miroir'.

    The

    latter is

    designed

    to

    be

    played

    either

    forward

    or in retrograde,

    but only

    the

    retrograde

    has been published.

    Both were

    completed

    by

    I96o.

    '

    In

    German

    in

    'Einsichten

    und Aussichten',

    tr.

    Hilde

    Strobel,

    Melos,

    xxii

    (I955),

    i62.

    ?

    Boukz on Music

    Today,

    tr. Susan

    Bradshaw

    and Richard

    R.

    Bennett,

    London,

    197I,

    p.

    25.

    2

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    tion of twelve-note

    pitch technique

    to the

    materials of

    rhythm, colour

    and dynamics,

    because

    each

    of these materials

    has a

    different inner

    structure.

    Pitch material in

    this style

    is

    a

    closed

    system

    of

    twelve

    chromatic pitches whose different

    permutations

    produce associative

    elements at will. Rhythm, on the other hand, does not contain such

    a closed

    system

    of

    separate elements; to

    enforce upon

    rhythm the

    same

    procedures that

    govern pitch

    cannot

    produce the same

    necessary conclusions.

    This

    point

    of

    logic applies to colour and

    dynamics

    as

    well.,

    When

    composers

    tried to use the

    same

    procedures

    for

    all four

    elements mentioned

    above,

    there

    was no

    logical

    or

    necessary

    relationship

    between

    them.

    The

    resultant 'chance

    by

    inadvertence'

    occasionally produced

    homogeneous and logical

    simultaneities,

    but not

    by

    rule of the

    composer.

    Boulez, however, did not reject serial technique completely; his

    arguments

    primarily reject

    the

    excesses

    of a

    system

    which

    re-

    linquished compositional

    decisions to a series of

    calculations and

    tables.

    For

    Boulez,

    the

    extents

    and limits

    of

    serial technique

    displayed

    in

    Structures rovided not

    a

    dead end,

    but a new begining: 'Serialism

    provided me with

    a

    syntax.

    In

    "Le Marteau",

    I

    used it

    to formulate

    thoughts'.7

    The

    syntax provided

    by

    Structureswas

    actually

    a re-definition of

    the role of

    the

    series.

    In

    'Musical

    Technique'

    Boulez

    presents

    still

    another definition of the series that illustrates this role; he stresses

    the

    importance

    of

    hierarchy

    within the series

    rather

    than

    the

    primacy

    of

    pitch-order:

    The

    series

    is

    ...

    the germ of a developing hierarchy...

    ,endowed

    with a

    greater

    or

    lesser

    selectivity,

    with

    a

    view

    to

    organizing

    a

    FINITE

    ensemble of creative

    possibilities

    ...

    ;

    this

    ensemble

    of

    possibilities is

    deduced

    from an

    initial series

    by

    a

    FUNCTIONAL

    generativeprocess

    (not simply

    the

    consecutive exposition of a certain

    number of objects,

    permutated according to restrictive numerical data)."

    Boulez's

    redefinition

    of the series has

    direct

    bearing

    on

    the

    analysis

    of

    'Constellation-miroir'.

    First,

    the

    recognition

    of interval-

    class

    and/or pitch-class hierarchy

    as

    opposed to pitch-order demands

    a

    reformulation of the

    role

    of pitch within a piece.

    Second, since it is

    the interaction between

    musical

    elements that

    produces form, any

    change

    of

    approach towards one

    or

    more elements is

    bound to affect

    the

    manner in

    which a

    composition

    as a

    whole is

    organized. Thus,

    the new role of

    pitch

    and

    the

    disavowal

    of the

    serialization of other

    elements invite

    special

    attention

    to the

    formal

    organization.

    Boulez has

    stated that his

    concept of form at

    that time was

    6

    See

    Gyorgy Ligeti,

    'Pierre

    Boulez',

    Die Reihe,iv

    (i958),

    38-63.

    7

    Peter

    Heyworth, 'Pierre

    Boulez', The

    New

    rorker,24

    March

    1973, p.

    63.

    $

    Boulez

    on Music

    Today,

    pp.

    35-36.

    3

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    influenced more by literature

    than

    by other composers,

    especially

    by Stephan Mallarme. 9

    He felt that writers had explored structural

    possibilities far more extensively

    than composers, and

    in

    Mallarme

    he found a system of organization suggestive of what he was

    attempt-

    ing in 'Constellation-miroir'. In 'Un Coup de des', the poem after

    which 'Constellation-miroir' is modelled, two facets of poetic

    usage

    have bearing on this analysis.

    First,

    Mallarme

    transposed words

    from their everyday associations

    into verbal objects with a poetic

    function by concentrating

    on phonemic qualities and by juxtaposing

    words

    in

    a manner which gave them a multiplicity of

    meanings.10

    Boulez's

    task was

    not

    dissimilar;

    he transposed pitches

    from

    their

    serial

    matrix

    into

    the

    phonemic

    state of the smallest recognizable

    unit of

    pitch relationship,

    serial or non-serial: the interval.

    Second, Mallarme in 'Un Coup de des' segmented phrases and

    arranged them on the page in such a way that the connections

    between

    phrases

    would

    be

    ambiguous. For example, if

    a

    sentence

    is

    diagrammed in the traditional

    way, the words are segmented and

    additional words

    are

    joined

    to them to designate their function.

    Even if the words are presented

    in an unusual order, the functional

    designations make the meaning clear:

    verb direct bject subject

    took

    the bread

    I

    uickly

    to

    my

    house

    adverb

    prepositionalhrase

    In

    'Un Coup de

    des',

    the sentence is fragmented, but there

    is no

    explicit relationship between

    the fragments, except for

    a certain

    typographical hierarchy:

    LE

    MAITRE

    surgi

    inf6rant

    de cette

    conflagration

    que se

    comme

    on

    menace

    l'unique

    Nombre

    qui

    ne

    peut

    pas

    hesite

    cadavre

    par

    le bras"

    9

    'Sonate,

    que me veux-tu ?',

    tr. D. Noakes and P. Jacobs, Perspectivesf New

    Music,

    i(1963),

    32.

    10

    Hans R. Zeller, 'Mallarme

    and Serialist Thought', tr. Margaret Shenfield,

    Die

    Reihe,

    vi (I964), 7.

    11

    Mallarme,

    ed. Anthony Hartley, Harmondsworth, I965,

    p. 2I8.

    4

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    Despite the

    seemingly

    fewer choices in the

    Mallarme

    poem,

    the

    musical continuity

    in

    'Constellation-miroir'

    has been segmented

    in

    the same fashion, and the choices

    of

    segment-sequences

    in

    perform-

    ance create

    ambiguity similar to that

    found

    in the Mallarme poem.

    Interesting as these artistic influences are, it is the process

    through

    which Boulez turned to aleatoric procedures that is im-

    portant. Boulez

    stated: 'Actually, the only thing

    one can play upon

    is the interaction between style

    and form'.

    12

    He developed

    a post-

    serial style

    and

    sought-by

    analogy perhaps-a formal procedure

    with which it

    could interact. The result of this

    search was a particular

    form

    of chance

    called alea,

    in which the composer controls precisely

    the

    areas

    in

    which

    chance

    may enter into the composition."I Alea,

    then,

    was not an outside influence, used in

    and for itself. Rather,

    it

    was the adoption of a literary viewpoint to create a formal procedure

    which could interact with a particular style.

    The intrinsic use of

    alea

    as a formal

    device in 'Constellation-

    miroir' can be seen by a glance

    at the score. The idea of

    an open-

    form,

    aleatoric

    movement is

    enhanced through the typographical

    layout of the

    movement.

    The score consists of nine pages,

    i8 ins.

    x

    24 ins.,

    over

    which

    58 segments

    of

    varying

    length

    are

    arranged.

    These segments

    are

    printed

    in either red or

    green, red standing for

    the chordal

    blocs

    sections and

    green for the points sections of

    pointil-

    listic texture. Signs before and after each segment mark the routes

    that

    can

    be taken.

    In

    addition

    to the many

    signs surrounding the segments,

    two

    different

    types

    of tempo

    indications are used. First are the

    specific

    tempo

    modifications often found

    in

    the

    blocs

    sections; these

    may

    indicate rapid changes of tempo

    in a

    short space,

    as

    in blocs i:

    Ex.

    1.

    126

    Vif

    J126 s *

    1

    t;= J126 J5

    ~~~~ Il~~~~~~

    sffz

    ___

    uJ

    iPed.

    sffz a----- U{.C.

    12

    Lecture

    at Case

    Western

    Reserve

    University,

    Cleveland,

    Ohio,

    March

    1971.

    13

    Pierre

    Boulez, 'Alea',

    La Nouvelle

    Revue

    ranfaise,

    xlix (I

    957),

    845. In

    this article

    Boulez distinguishes

    between

    the

    different

    uses of chance

    in

    music

    by

    the

    composer's

    intent.

    Two other uses

    are

    'chance

    by

    inadvertence'

    or total

    serialism

    (p.

    839)

    and

    random

    techniques

    (p. 841).

    There

    is no ready-made

    noun

    to go with

    the

    adjective,

    aleatory.

    Mr.

    Cross

    prefers 'aleatoricism',

    while I would

    like

    to see the word

    alia

    taken

    into

    the English

    language.

    5

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    Second

    are the

    'if. . .

    then'

    tempo

    markings,

    those

    which

    are indica-

    ted

    by

    the

    same

    sign that indicates

    the choice

    of

    segment.

    They

    state,

    in

    effect,

    that if

    the

    composition

    is

    to proceed

    from

    segment

    x to

    segment

    y,

    the

    latter segment

    must

    be

    played

    at z tempo;

    on

    the

    other hand, if the composition is to proceed from segment q to

    segmenty,

    the latter

    must be

    played

    at

    w

    tempo,

    as

    in

    pointS

    2:

    Ex. 2.

    7

    J

    80 (mobile)

    4=76

    -(stable)

    =

    5

    -

    =86

    - (mobile)

    J=

    96

    tres

    ecet

    rapide

    * b

    -

    .|

    absolument

    sants

    --

    Pedale

    All of these

    signs add

    to

    the

    visual

    complexity

    of the

    score.

    The use

    of

    different

    colours

    and the

    resemblance

    of

    the

    layout

    of

    the score

    to extra-musical

    elements

    provide

    additional

    amusement

    for the

    performer;

    the

    multiplicity

    of

    signs

    gives

    the

    illusion

    that

    the

    pianist

    has

    more choices

    than

    are

    really

    important

    or available.

    At

    the highest

    level

    of

    organization

    there

    are six

    sections:

    Melange,

    points

    3,

    bloCs ,

    points 2,

    blocs

    and points

    ;

    these

    sections

    must

    occur

    in the order

    stated.

    At the

    next

    level,

    individual

    segments

    are

    linked

    together by the other segments in whose company they are allowed

    to

    occur.

    Thus,

    although

    a

    section

    may

    have twelve segments,

    these

    linkings

    may cause

    the

    segments

    to create

    three

    units.

    Within

    these

    units,

    the

    choice

    of order

    for

    individual segments

    may

    remain

    free.

    For example,

    Milange

    has six segments.

    The

    pianist

    must

    start

    with

    the first segment

    and end

    with

    the sixth.

    Of the

    remaining

    segments,

    the

    third

    must follow

    the second

    and

    the

    fifth must follow

    the

    fourth.

    Segments

    2

    and

    3

    belong

    to

    one

    textural

    density

    and

    segments

    4

    and

    5

    to

    the

    other.

    Thus

    there

    are

    only

    four

    units

    and

    only

    one

    choice;

    the choice is whether segments 2-3 will precede or follow segments

    4-5,

    or,

    in

    other words,

    which

    density

    will

    come

    first.

    The

    other

    sections,

    by

    the

    very

    nature of

    the

    signs

    which

    surround

    them,

    divide

    into

    units

    in the

    same

    way.

    When

    unit

    groupings

    are

    taken into

    account,

    there

    are

    actually

    only

    17

    units,

    although

    there

    are

    58

    segments.

    The following

    table

    shows

    the number

    of

    segments

    and

    units

    in each section:

    6

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    SECTION

    SEGMENTS

    UNITS

    Mllange

    6

    4

    points

    IO

    2

    blocs2 24 3

    points

    2

    8

    3

    blocs

    I

    I

    2

    points

    3

    3

    Tempo does not really

    affect the

    number of units. Of the

    two

    types of

    tempo

    modification discussed

    earlier the first occurs within

    a

    segment. The

    frequent changes

    in tempo

    measure the time

    relation-

    ship between

    chords or pitches

    (see Ex. i). In music

    with

    a

    basic

    pulse this measurement is accomplished by the rhythmic values

    assigned

    to pitches. In his

    earlier

    compositions Boulez's notation

    was

    characterized by

    highly

    complex rhythms in music

    that sometimes

    lacks a

    basic pulse. He found

    that the

    realization of these rhythms

    in

    performance was an

    approximation of the

    notation and that

    simpler

    notation,

    combined with

    fluctuating

    tempo, would serve

    him

    better.

    1

    As

    a

    result, the

    rhythmic

    notation in this movement

    has

    actually been

    simplified.

    Fluctuations in tempo

    replace many of

    the

    earlier,

    complex

    rhythmic patterns; in

    their place

    one finds

    simple

    quavers or semiquavers.

    The connective,

    'if . . . then' tempo

    indications

    between two

    segments (see Ex.

    2) might

    appear to be a further

    usage of chance

    techniques, but

    their primary

    purpose is to assure a

    smooth

    transition

    from one segment

    to the next.

    Since the order of

    segments within a

    unit

    is

    not

    predetermined, tempo must

    be

    considered within the

    multiple

    possibilities of contexts

    for each

    segment. This planning

    can

    be

    seen

    in

    the two

    choices offered by

    Boulez for the

    main unit of

    points2 (in

    the

    diagram each crotchet or

    quaver

    represents a segment):

    Ex.

    3

    ---j

    138

    3 4

    t

    A J---~~~41-26-121

    72

    endu

    126,-152

    1/J

    52- 26

    ------------s2 -

    8

    1---------

    _

    The

    pianist,

    then, actually

    has far

    fewer

    choices

    than one

    would

    expect from

    the

    notation of

    'Constellation-miroir'. While there

    is

    choice

    among

    individual

    segments,

    the

    organization of

    these

    segments

    into

    units

    prevents

    random

    chance and

    provides a

    sub-

    formal

    structure.

    In

    addition,

    the

    tempo markings,

    which at

    first

    14

    iAl6a', pp.

    841-2-

    7

  • 8/17/2019 "the Concept of 'Alea' in Boulez's 'Constellation-Miroir'

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    glance

    appear to promote the

    use of chance,

    perform two long-

    established

    functions:

    the control of the

    rate of musical

    events; and

    the control

    of smooth transitions

    between

    segments.

    To this point we have eliminated some misunderstandings about

    the use

    of

    chance in 'Constellation-miroir'

    and have determined

    how

    many genuine

    notational choices

    are given.

    In short, it has been

    shown

    that Boulez has loaded the dice.

    To determine the extent

    of

    the loading

    an

    examination of the pitch

    structure

    is necessary.

    Boulez has stated that

    his prime

    concern with serial organization

    in

    this

    piece

    was

    to

    create

    horizontal

    and vertical

    sonorities related

    to

    each other

    in

    a

    manner that could be perceived

    by the listener.

    15

    If

    this movement

    is

    to

    be considered serial, it

    must

    be considered so in

    light

    of Boulez's definition

    of the series,

    with its emphasis

    on

    hierarchy as opposed

    to pitch-order.

    The

    pitch organization

    of 'Constellation-miroir'

    is similar to that

    of 'Trope', the

    other

    published

    movement of the

    Third Piano Sonata.

    The same series

    can

    be considered

    the foundation

    from which Boulez

    develops

    his pitch

    material:

    I

    2

    3

    4

    IEFF#BI

    G#

    I

    GAA

    CA

    I

    CDD#I

    The

    four

    main subdivisions

    of

    the chromatic

    set,

    when reduced

    to

    an

    unordered,

    elemental

    state,

    consist

    of:

    (a) two semitones

    and

    a

    perfect fourth; (b)

    an isolated

    pitch; (c)

    a

    pattern

    of

    tone, semitone,

    tone;

    and

    (d)

    two semitones.

    In

    addition,

    the

    second

    and

    fourth

    elements

    of the series

    can be

    combined,

    forming exactly

    the same

    intervallic relationships as the first element.

    From

    these initial

    pitch

    elements

    Boulez creates

    short,

    easily

    recognizable

    patterns

    that

    are

    repeated

    vertically

    or

    horizontally

    at

    random;

    the

    only

    hierarchical

    organization

    is the

    inclusion

    or

    exclusion

    of

    certain

    intervals,

    or the

    favouring

    of a few

    intervals,

    such

    as

    the

    minor second.

    This

    type

    of

    technique-the

    use of

    basic,

    simple

    intervallic

    structures

    as

    a

    replacement

    for the

    more

    highly

    organized

    serial

    pitch

    structure-has

    been

    seen

    as an extension

    of

    Webern's

    ideas.

    16

    It has also

    been considered

    related

    to the

    investiga-

    tion of the phonemic quality of words by Mallarme.'7 The pitch

    structure

    results

    from

    units

    so basic

    that

    they

    can

    not be

    broken

    down

    further:

    15

    Lecture

    at

    Case Western

    Reserve

    University,

    March

    1971.

    16

    Zeller,

    'Mallarme

    and

    Serialist

    Thought',

    p.

    7.

    17

    Ibid., p.

    sO.

    8

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    EL 4.

    Vif

    4=126

    accel

    J152.

    -w

    C

    ?ts0u:F--t; ft -j127

    xxf

    ~v gf

    I h

    f

    fff

    Mf

    ff ff

    ff

    sYffr

    S

    Discussion of prominent pitches and intervals alone does not lead

    to

    significant insights

    about

    Boulez's

    piece.

    Two

    points

    should be

    noted,

    however.

    First,

    the

    lack

    of

    definitive,

    hierarchical

    pitch

    organization

    results in a bland

    uniformity

    of horizontal and vertical

    pitch structures.

    This

    uniformity

    allows basic sonorities to be

    easily

    grasped by the

    listener,

    unless the texture becomes too dense.

    At

    the

    same

    time it offers an ideal

    background

    for textural

    manipulation.

    The

    absence

    of

    a

    strong

    hierarchical

    plan

    makes

    possible

    the

    reduction

    in

    emphasis

    of the

    very

    element to which we are most

    attuned: pitch. Second, there is a basic difference in the pitch

    organization

    of the

    principal

    points

    and blocs

    sections.

    The

    points,

    through

    their

    sparser

    texture and concentration on the

    horizontal,

    allow

    the listener

    to

    perceive

    at

    least

    part

    of the

    pitch

    structure.

    Many

    of

    the

    blocs,

    on the

    other

    hand,

    are

    so dense that

    pitch compre-

    hension is impossible; these dense sections correspond

    in

    Boulez's

    terminology

    to

    ordered

    chaos.

    In

    this

    manner

    the

    pitch

    structure

    does

    support

    the main

    structural

    divisions

    while

    remaining

    a

    secondary

    element

    suitable for textural

    manipulation.

    Each texture is further reinforced by dynamics and range. The

    points

    sections

    employ

    moderate

    dynamics

    and

    a

    middle

    register,

    while the blocs

    use

    extremes

    of

    both

    dynamics

    and

    range.

    Within

    each section various

    facets

    of each

    type

    of

    texture may

    be

    presented,

    allowing

    subtle

    differences

    in

    texture.

    The

    structural organization of

    this

    work, then,

    depends upon juxtapositions

    of

    textures.

    Since

    pitch

    organization is not

    a

    major determinant, especially at the subformal

    level, the options left open to the performer are really of little

    significance.

    To be

    sure,

    different

    routes will

    cause higher or lower,

    slightly more dense sonorities to be heard in different orders, but

    since

    textural

    organization

    does not

    create the

    same degree of

    expectation

    as

    pitch organization the choices have a minimal effect

    on

    the

    perception

    of

    form.

    The

    basic six-part structure of alternating

    textures remains

    primary.

    This is the way Boulez has

    loaded the dice of chance: he has only

    conceded

    to

    the

    performer the things that do not matter; the

    9

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    perceptible

    structure

    is

    decided by

    Boulez himself.

    The

    structure of

    this movement

    is no

    more 'open' than

    the other

    compositions

    were

    'closed' structures,

    unless

    one

    is to substitute

    'pitch-orientated'

    for

    closed and 'non-pitch-orientated'

    for

    open.

    The composition has

    an

    ordered succession of textures. The movement consists of six sections.

    The

    first, Milange,

    introduces

    the

    two textures, the

    first

    of which can

    be described

    as

    sparse

    and

    pointillistic,

    and the second as

    more

    dense

    and chordal.

    These two

    basic textures

    are

    presented in

    alternation

    for

    the rest

    of the movement,

    ending with

    a pointillistic

    section.

    The

    variety of orders

    possible

    within each

    section

    gives renewed

    interest

    to each

    section

    without

    removing

    a

    sense

    of structure.

    The conclusion

    is inescapable

    that 'Constellation-miroir'

    is

    composed

    within a strong

    structural

    framework.

    Aleatoric

    proced-

    ures do not weaken the structure, especially at the highest formal

    levels. The term

    'open form'

    has

    no relevance

    here,

    unless it is

    re-defined

    as referring to

    a composition

    whose

    structure is

    determined

    primarily

    by elements

    usually

    given secondary

    status.

    This is

    a piece

    whose form is

    articulated by

    what are generally

    considered

    the lesser

    materials

    of music: texture

    and timbre (in

    the sense of

    range, spacing

    and specially

    devised

    effects for the piano).

    This is the

    essence

    of Boulez's

    search

    for a type

    of controlled

    chance,

    or

    alia.

    In

    the

    past,

    while

    reaching

    for

    new means

    of

    organiz-

    ation, he relied only on musical elements to which past history

    assigned

    certain expectations:

    pitch

    focus, symmetry,

    rhythmic

    periodicity

    and so forth.

    If these elements

    were to serve

    as both

    the

    newly organized

    elements

    and the organizational

    basis

    of the

    composition,

    it

    was possible

    for

    chance

    to combine

    these

    elements

    and

    purposes

    in

    such

    a

    way

    that

    unintentional distortions

    appeared.

    The solution

    was twofold:

    first,

    to

    recognize

    chance

    as

    an

    adversary

    and plan every

    point

    at which

    it

    might enter;

    and second,

    to base

    the

    musical structure

    on a

    non-expectational

    element, such

    as

    texture.

    If

    chance engaging

    with

    structure

    is seen

    from this

    perspective,

    it

    becomes

    clear

    that the

    analyst's

    job

    is not to

    engage

    in

    fruitless

    pursuits

    of various

    routes

    through

    a

    composition,

    nor

    to

    endlessly

    count

    pitches

    in

    search

    of even

    a

    changing

    hierarchy

    of

    pitches.

    His

    task is

    to

    recognize

    the tremendous

    vitality

    of these collections

    of

    pitches

    as

    textures

    and to

    begin

    to

    develop

    a

    vocabulary

    suitable

    first for describing,

    then

    for

    analyzing

    them.

    I0