Halfâ€Diminished Seventh Chordshearandplay.s3. seventh chord. The scale we are using in...

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Transcript of Halfâ€Diminished Seventh Chordshearandplay.s3. seventh chord. The scale we are using in...

  • JermaineGriggs&ChukuOnyemachi

    QUICKREFERENCEON

    HalfDiminishedSeventhChords

  • CHAPTER1The

    HalfDiminishedSeventhChord

    Defined

  • Thehalfdiminishedseventhchordisnotascommonasthemajor,minor,anddominantseventhchords,but,nonetheless,veryimportantinharmony.

    Thehalfdiminishedseventhchordisformedfromtheseventhdegreeofthemajorscaleandisrarelyused.

    Inthispost,we'llbecoveringtheinsandoutsofthehalfdiminishedseventhchordstartingfromitsbasicdefinition,thendelvingintoitsintervallicbreakdownwhereyouwillunderstandtheintervalsthatmakeupthehalfdiminishedseventhchord.

    I'malsogoingtoshowyoualternativeapproachestothechordformationofthehalfdiminishedseventhchordthescaleapproach,theintervalapproach,andthechordapproach.

    Let'sgo!

  • TheHalfDiminishedSeventhChordDefined

    Thehalfdiminishedseventhchordisachordformedofftheseventhdegreeofthemajorscale.Tohelpyouunderstandmoreaboutthischord,I'llmakeareferenceusingtheCmajorscale.

    IntheCmajorscale,B:

    ...istheseventhtone.Thehalfdiminishedchordissimplythechordformedoffthisseventhtone(B,inthiscase).Usingmypickskiptechnique,allyoujustneedtodoisstartonB:

  • ...skipCandpickD:

    ...skipEandpickF:

    ...skipGandpickA:

  • Ifweputallthenoteswe'vepickedtogether,we'llhaveB,D,F,andA:

    ...andthat'sthehalfdiminishedseventhchord.Here'swhatitlookslikeiftransposedahalfstepuptoC:

    Intheensuingchapters,we'llbreakdownthischordintoitsintervalliccomponentssothatyou'llunderstandwhythischordiscalledthehalfdiminishedseventhchord.

  • CHAPTER2ABreakdownOf

    TheHalfDiminishedSeventhChord

  • Thegoalofthischapteristobreakdownthehalfdiminishedintoitsintervalliccomponents.Thisisafancywaytosaytheintervalsthatmakeupthechord.Everychord,nomatterhowsmallorlarge,nomatterhowcomplexorsimple,canbebrokendownintosmallerharmonicfragmentsknownasintervals.Anintervalisbasicallytherelationshipbetweentwonotesasitrelatestodistance.

    SousingtheChalfdiminishedseventhchordasareference,wehave...

    CandEb:

    ...whichisaminorthird.

  • CandGb:

    ...whichisadiminishedfifth.

    CandBb:

    ...whichisaminorseventh.

  • "Whyarewecoveringtheintervalliccomponentsof

    thehalfdiminishedchord?"

    Theintervalliccomponentsofachordhelpyouunderstandthesetwothings:

    Itsquality Itsstability

    Checkoutwhateachoftheseintervalsrepresent...

    Theminorthird

    Theintervalformedbetweentherootandthirdofachorddeterminesitsqualitywhetheritismajororminor.Thehalfdiminishedseventhchordisaminorchordqualitybecausetheintervalbetweenitsrootandthirdisaminorthird.

    Thediminishedfifth

    Thediminishedfifthisanunstableinterval.

    Itwascalledthe"devilinmusic"severalcenturiesagoandpopularlyknowntodayasthetritone.Thediminishedfifthintervalisunstableasopposedtotheperfectfifthinterval.Everychordthathasa

  • diminishedfifthintervalisunstableandthehalfdiminishedseventhchordisnoexception.

    Theminorseventhinterval

    Theminorseventhintervalisadissonantinterval.

    However,thisintervalcontributestothequalityofthehalfdiminishedseventhchord.Theintervalbetweenthethirdandseventhchordtonesofthehalfdiminishedseventhchordisaperfectfifth.

    UsingChalfdiminishedseventhchordasareference:

    ...theintervalbetweenEbandBb:

    ...whicharethethirdandseventhtonesofthehalfdiminished

  • seventhchordareaperfectfifthapart.Forallintentsandpurposes,theperfectfifthintervalisconsideredtobeuniversallyconsonant.

    Therefore,thehalfdiminishedchordisacombinationofstabilityandinstability.Stabilitybetweenitsthirdandtheseventhchordtones(EbandBb):

    ...andinstabilitybetweenitsrootandfifth(CandGb):

    ...asopposedtothediminishedseventhchord,whichhasabsolutelynodegreeofstability.

    Nowthatyou'refamiliarwiththeintervalliccomponentsofthehalfdiminishedseventhchord,let'sgoaheadandexploreitsformation.

  • CHAPTER3ApproachesToTheChordFormationOfTheHalfDiminished

    SeventhChord

  • Inthischapter,wewillbetalkingaboutchordformationapproachesandlikeIpromisedinthebeginningofthiscourse,we'llbecoveringthreeapproachestothechordformationofthehalfdiminishedseventhchord.

    ScaleApproachToTheChordFormationOfTheHalfDiminishedSeventh

    Chord

    Theveryfirstapproachtotheformationofthehalfdiminishedseventhchordwillfeaturetheuseofscales.Thisiscalledthescaleapproachbecausewearegoingtobeusingaknownscaletoformthehalfdiminishedseventhchord.

    Thescaleweareusinginthischordformationmethodisanoldscalesystemknownasthelocrianmode.ThelocrianmodeistheseventhmodeanditisnaturallyformedonthekeyboardfromBtoB:

    ...allwhitenotes.

  • Earlierinthebeginning,Idefinedthehalfdiminishedseventhchordasachordoftheseventhdegreeofthemajorscale.

    Atthispoint,youshouldbeseeinghowsynonymousthehalfdiminishedseventhchordiswiththenumberseven.

    Itisthechordoftheseventhdegreeanditsalsoformedfromtheseventhmode[thelocrianmode.]

    "HowdoIformthelocrianscaleinallthekeys?"

    Theformationofthelocrianscaleisprettysimple!

    Toformthelocrianscaleinallthekeys,allyouneedtodoistothinkintermsofthemajorscaleofthekeyahalfstepabovethenoteofthelocrianmodeyouwanttoform.

    IfIwanttoformtheClocrianscale,allIneedtodoistothinkintermsofDb.TheDbmajorscalecanhelpyouderivetheClocrianscaleandthisisbecausetheClocrianscaleissimplytherearrangementofthenotesoftheDbmajorscale:

  • ...fromCtoC:

    StartingfromC:

    ...IfIcontinuetoaddothertonesoftheDbmajorscaletoit...

  • I'lladdDb:

    ...addEb:

    ...addF:

  • ...etc.untilIgettoCagain:

    ThisworksbecauseCisreallythe7thtoneoftheDbmajorscale.PlayingtheDbmajorscalefromthe7thdegreetothehigher7thdegreeproducesthelocrianmode.

    Here'sonemoreexample...

    IfIwanttocreatetheFlocrianscale,allIneedtodoistothinkintermsofthemajorscalewhoserootisahalfstepupfromFandthat'stheGbmajorscale:

  • StartingfromF:

    ...IwillcontinuetoaddothertonesoftheGbmajorscaletoit...

    I'lladdGb:

  • ...addAb:

    ...addBb:

    ...addCb:

  • ...etc.untilIgetbacktoF:

    WhatsreallyhappeningisImplayingtheGbmajorscalefromthe7thdegree(F)tothehigher7thdegree(F).

    Forreferencepurposes,herearethelocrianscalesinalltwelvekeys:

    Clocrianscale:

  • C#locrianscale:

    Dlocrianscale:

    D#locrianscale:

  • Elocrianscale:

    Flocrianscale:

    F#locrianscale:

  • G:locrianscale:

    G#locrianscale:

    Alocrianscale:

  • A#locrianscale:

    Blocrianscale:

    Thehalfdiminishedseventhchordcanbeformedusingthelocrianscaleifyouarefamiliarwithmypickskiptechnique.

    Allyouneedtodoispickanoteandskipthenextnoteuntilyougettotheseventhtoneofthelocrianscale.

    Here'sthescaleapproachtotheformationoftheChalfdiminishedseventhchordusingtheClocrianmode:

  • StartingfromC:

    ...skipDbandpickEb:

    ...skipFandpickGb:

  • ...skipAbandpickBb:

    Soputtogether,C,Eb,Gb,andBbwillproducetheChalfdiminishedseventhchord:

    Followingthisprocedureusinganyofthelocrianscaleswecovered,youcanformthehalfdiminishedseventhchordinallthekeys.

  • IntervalApproachToTheChord

    FormationOfTheHalfDiminishedSeventhChord

    Thenextchordformationapproachistheuseofintervals.

    Theintervallicbreakdownofthehalfdiminishedseventhchordshowedusthreeintervalsthatitconsistsoftheminorthird,thediminishedfifth,andtheminorseventhintervals.

    Stackingtheseintervalsinoneoctavewillproducethehalfdiminishedseventhchord.

    Theminorthirdintervalcanbeformedinanykeyfromtherelationshipbetweenthefirstandthirdtonesofthelocrianscaleinthatkey.Thediminishedfifthisformedfromtherelationshipbetweenthefirstandfifthtonesofthelocrianscalewhiletheminorseventhisformedfromtherelationshipbetweenthefirstandseventhtonesofthelocrianscale.

    Stackingtheminorthird,thediminishedfifth,andtheminorseventhintervalstogetherinoneoctavewillproducethehalfdiminishedseventhchord.

  • InthekeyofC,thehalfdiminishedseventhchordconsistsof...

    CandEb:

    ...aminorthird.

    CandGb:

    ...adiminishedfifth.

    CandBb:

    ...aminorseventh.

  • StackingalltheseintervalsinoneoctavewouldproducetheChalfdiminishedseventhchord:

    Now,letmeshowyouinacouplemorekeys...

    Example#1Fhalfdiminishedseventh

    TheFhalfdiminishedseventhchordcanbeformedbystackingthethreeintervalliccomponentsinthekeyofF...

    FandAb:

    ...aminorthird

  • FandCb:

    ...adiminishedfifth.

    FandEb:

    ...aminorseventh.

    StackingthesetogetherinoneoctavewillformtheFhalfdiminishedchord:

  • ...whichconsistsofF,Ab,Cb,andEb.

    Example#2Ahalfdiminishedseventh

    TheAhalfdiminishedseventhchordcanbeformedbystackingthethreeintervalliccomponentsinthekeyofA...

    AandC:

    ...aminorthird

  • AandEb:

    ...adiminishedfifth.

    AandG:

    ...aminorseventh.

    FittingthistogetherinoneoctavewouldproducetheAhalfdiminishedseventhchord.

  • ChordApproachToTheChord

    FormationOfTheHalfDiminishedSeventhChord

    Ourlastchordformationtechniquefortodayfavorstheuseofaknownchord.Inapreviouspost,wecoveredtheminorseventhchordandItrustthatyouarefamiliarwithit.

    Youcanlowerthefifthtoneofanyknownminorseventhchordbyahalfsteptoproducethehalfdiminishedchord.UsingtheCminorseventhchordasanexample:

  • Ifthefifthtone(G):

    ...isloweredbyahalfstep(toGb):

    ...we'llhavethehalfdiminishedseventhchord:

  • Here's,sidebyside,theminorseventhchordandthehalfdiminishedseventhchordinall12keys:

    CminorseventhchordvsChalfdiminishedseventhchord:

    C#minorseventhchordvsC#halfdiminishedseventhchord:

    DminorseventhchordvsDhalfdiminishedseventhchord:

  • D#minorseventhchordvsD#halfdiminishedseventhchord:

    EminorseventhchordvsEhalfdiminishedseventhc