09 Rhythm Changes
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Transcript of 09 Rhythm Changes
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RhythmChanges
FromFundamentalsofJazzImprovisation:WhatEverybodyThinksYouAlreadyKnow
Dr.MarkWatkins
DirectorofJazzStudiesBrighamYoungUniversity–Idaho
©2010byMarkWatkinsMaterialshereinareprovidedforpersonaluse.Nopartmaybereproduced
withoutwrittenpermissionfromtheauthor.
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OriginalRhythmMusicianscompositingandperforminginjazz,musicaltheater,R&B,pop,andotheridiomswereinfluencebyGershwin’stuneIGotRhythm.However,itshouldbenotedthattheI(oriii),vi,ii,V,IcommontotheAsectionsofrhythmtunesandthedominantcycleofthebridgeareprogressionsasoldastheadventofourdiatonicsystem.Regardlessoftheinfluence,RhythmChangesareacommoncontrafactinjazz.(Acontrafactisanewmelodywrittenonapre‐existingchordprogression.Sincechordprogressionscannotbecopyrighted,performersoftenwritenewmelodiesoverprogressionsonwhichtheyenjoyimprovising.)TuneswrittenoverRhythmChangesareverycommon;theywereespeciallysointheSwingandBeboperas.CharlieParkerhasstatedthatlearningblues,rhythmchanges,andCherokeein12keyswellprepareoneforalmostanything.OriginalRhythmisa32barform,AABA.Fundamentally,atwobarIvi|iiVsequenceplayedfourtimesconstitutestheAsections.Bars5‐6inGershwin’stuneareII7|IViv.Thissetofchords,withGershwin’s5thand6thbarsarethefoundationforsucceedingcontrafacts.Asection:
Thebsectionorbridgeisadominantsequencestartingonthemediantcyclingeverytwobars.Bsection:
Gershwin’stunecarriesatwobarextensionnotoftenplayedwithRhythmChangescontrafacts.
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OriginalRhythm:IGotRhythm(GeorgeGershwin)
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OptionsOneoftheadvantagestoRhythmChangesisitsflexibility,similartotheblues.Possibilitiesareextensive.Optionsforbars1‐2canbepairedwithbars3‐4options,likewisewithbar5,6,and7‐8.Allexampleswithmajor7chordscouldusemajor6chordsandviceversa.Oneortheotherisusuallyusedconsistentlythroughouttheprogression.Set1:mm.1‐2options:FundamentalIviiiV
MinorvichangedtoVI7
VIandValtered
VI,V,andIIalteredtocreateacycleofdominants
DiminishedpassingchordssubstitutedforviandVtocreateachromaticbassline
TheaboveprogressionisusuallyfollowedbyiiisubstituteforIinbar3,thuscompletingthebassline.
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Set2:mm.3‐4options:FundamentalIviiiV
MinorvichangedtoVI7
iiisubstitutedforI,creatingacycleofiiVs
Dominantsaltered
Set3:m.5options:FundamentalmajorIfollowedbyI7
MinorvsubstitutingforI,creatingaiiV(bluessoundonm.5)
I7substitutingformajorI(bluessoundonm.5)
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Set4:m.6options:FundamentalIVVII7,resolvescommonlytoI(TheIVVIIIprogressionisfrequentinmanytunes.MovingtoIVinm.6isreminiscentoftheItoIVprogressionfoundintheblues.)
IV7substitutingformajorIV,creatingcyclemotion
MinorivonbeatthreesubstitutesforVII7,IVismajor
samesubstitutionwithIV7substitutingformajorIV
Raised4throotonbeat3,createsachromaticrootprogression;whenothernotes(3,5,7)remainconstantthroughthemeasureadiminishedchordresults.
Set5:mm.7‐8options:Tonic6/4(B‐flatoverF)completeseitheradescendingorascendingbasslinedependingontheprecedingchords
SameprinciplewithiiisubstitutingforI
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Possiblebassline1,descending:(Inversionsarenotusuallyindicatingasbelow.)
Possiblebassline2,ascending:(Likewise,inversionsnotalwaysgiven.)
FundamentalIviiiVreturntotopofAsection
iiimaybesubstitutedforIinallmm.7‐8examples
VI7substitutesforvi
iiisubstitutesforI,creatingacycleofiiVs
Dominantsaltered
II7substitutesforii,creatingacycleofdominants
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Tonic6/4,V7Icanconclude1stor2ndAsection
iiV7Icanconclude1stor2ndAsection
Set6:mm.15‐16options:m.16ormm.15‐16usuallyendontonic.Thisfinalcadencehelpsconclude2ndAsectionmelodicmaterialandfacilitatesacolorfulchromaticmediantcontrasttothebridge.Asabove,tonic6/4,V7Icanconclude1stor2ndAsection
Asabove,iiV7Icanconclude1stor2ndAsection
Tonicisoftenheldforbothmm.15and16
AllexamplesofBsection(bridge)harmonicsequencescanutilizealtereddominants.
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Bridge1:Fundamentalcycleofdominantharmoniesstartingonthechromaticmediant(dominantchordbuilton3rdscaledegreeoftonic)
Bridge2:iiV7substitutedforV7
Bridge3:iiV7substitutedforV7inmm.17‐18and21‐22,creatingasequenceofiiV7Isinmm.17‐20and21‐24
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Bridge4:Tritonesubstitutionsinmm.19‐20and23‐24createadescendingchromaticsequence
ThelastAsectionofRhythmChangesisusuallyidenticaltothe1stAsection.Finalchorusesoftenusethe2ndAsectiontoend.Thefollowinggriddemonstratesthepossibilitiesoftheaboveexamples,whicharenotallinclusive;manymorepossibilitiesexist.PracticallyanygroupfromSet1canbecombinedwithanygroupfromSet2.AnygroupfromSet2canbecombinedwithanygroupfromSet3,Set3to4,and4to5.FirstAsection: Set1:mm.1‐2 Set2:mm.3‐4 Set3:m.5 Set4:m.6 Set5:mm.7‐81 2 3 4 5 6 7 SecondAsection: Set1:mm.1‐2 Set2:mm.3‐4 Set3:m.5 Set4:m.6 Set5:mm.7‐81 2 3 4 5
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AnyBridgesetcanbecombinedwithanyAsection.Bridge:
LastAsection:SameasFirstAsectionwhenrepeatingtotopofform.SameasSecondAsectionwhenending.
ExamplesOriginalRhythm:IGotRhythm(GeorgeGershwin)Swing:LesterLeapsIn(LesterYoung)Swing:Cottontail[progression1](DukeEllington)Swing:Cottontail[progression2](DukeEllington)Bebop:Anthropology(CharlieParker)Bebop:Wee/Allen’sAlley(DenzilBest)SongBook:BlueMoon(RichardRodgersandLorenzHart)HardBop:Oleo[progression1](SonnyRollins)HardBop:Oleo[progression2](SonnyRollins)HardBop:TheTheme(MilesDavis)Hardbop/Contemporary:TheEternalTriangle(SonnyStitt)Contemporary:ThirdRail(MichaelBrecker)
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OriginalRhythm:IGotRhythm(GeorgeGershwin)
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Swing:Cottontail[progression1](DukeEllington)
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Swing:Cottontail[progression2](DukeEllington)
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Swing:LesterleapsIn(LesterYoung)
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Bebop:Anthropology(CharlieParker)
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Bebop:Wee/Allen’sAlley(DenzilBest)
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SongBook:BlueMoon(RichardRodgersandLorenzHart)
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HardBop:Oleo[progression1](SonnyRollins)
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HardBop:Oleo[progression2](SonnyRollins)
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HardBop:TheTheme(MilesDavis)
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HardBop/Contemporary:TheEternalTriangle(SonnyStitt)
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Contemporary:ThirdRail(MichaelBrecker)
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ImprovisingonRhythmChangesTherearetwocontrastingwaystoimproviseontheAsectionsofRhythmChanges:changerunningandblanketing.Thesewaysareoftencombinedinasingleimprovisedsolo.Thebridgecanbeplayeddiatonicallybutlendsitselftoalterations.ChangeRunning1. Patternsstandardtoone‐measureiiVprogressionsworkwellwhenthevichordismadeVI7
thusformingaiiiVI7iiV7cycle(cycleofiiV7s:D‐G7|C‐F7).iiV7CycleExample1:
iiV7CycleExample2:
2. Onecangivetheimpressionofchordspecificitybyemphasizingthenotesthataremost
different.AlleightmeasurescanalternatebetweenDandE‐flatasguidetones.
BlanketingTherearetwowaystothinkaboutblanketing:alleightbarsoftheAsectionorinvariousparts,asbelow.
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Example1:Blanketingalleightwithmajororpentatonics.
Example2:Blanketingalleightwithblues.
Example3:Split,fourbarsofMajor,fourbarsofBlues.
CombinationsExample1:Blanketing,changerunninginto2ndA.
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Example2:Blanketing,changerunningintom.5.
Example3:ChangeRunning2ndA,mm.1‐2overJazzRhythm,Blanketingmm.3‐4,Runningm.6
intotonicB‐flatbeforebridge.
BridgeBlanketingisgenerallynotappropriateforthebridgeofRhythmChanges,althoughsomeexamplesdoexist.Oneshouldimproviseinachordspecificmanner.Simplemixolydianscaleswork,asdoalteredchords/scales.Alteredscalescanbesuccessfulwhetherornottheharmonyincludesthem.Thefollowingchartshowsafewpossibilities:
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RhythmChangesBridgeToneColorChoices
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RhythmChangesTuneList
RhythmTunes RhythmTunes(cont.)OneBassHit(DizzyGillespie)Opp‐Bop‐Sha‐Bam(DizzyGillespie)OscarforTreadwell,An(DizzyGillespie)