06-07-ChordsHarmonicSonorities
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8/12/2019 06-07-ChordsHarmonicSonorities http://slidepdf.com/reader/full/06-07-chordsharmonicsonorities 1/1 LearnMusicTheory.net 6.7 Chords and Harmonic Sonorities Copyright © 2011 by Mark Feezell. All Rights Reserved. 1. Chord or sonority = any group of notes played at the same time. 2. Voicing = The vertical spacing/arrangement of notes in a sonority. Usually emphasizes 2nds, 3rds, or 4ths/5ths. SECONDS: Secundal Chords A secundal chord is any harmonic sonority whose voicing emphasizes major and minor seconds or sevenths. A tone cluster is a secundual chord voiced as a stack-of-seconds in a single octave. A whole-tone chord is any chord (in any voicing) drawn entirely from any single whole-tone scale. and and _ _ _ ...all come from this whole-tone scale. More examples of secundal chords: Tone cluster with 2 notes raised an octave Based on a series of seconds (B-C-D-E-F), with the C doubled. A-B-C-D-E-F, with the pitch A raised an octave. Overwhelmingly secundal, despite the P4 (D-G) and M3 (C-E). THIRDS: Tertian Chords Added-note chord : One or more notes are added to a primarily tertian sonority. Above: "A" is an added 2nd. A tertian chord is any harmonic sonority whose voicing emphasizes major and minor thirds. You should know triads and 7th/9th/11th/13th chords (see earlier chapters). Here are more tertian chords: Split-third chord : Triad or 7th chord with major AND minor 3rds. Above: F minor + F major (voicing varies). Chord with split members: Triad or 7th chord with note(s) a m2 away from root, 3rd, 5th, and/or 7th. Above: B (=C ) is the split 5th. Polychord: Two or more simultaneous triads. Above: C and D . Stravinsky's "Petrushka" chord: Polychord with two triads a tritone apart, here C and F . Mixed-interval chord = No single interval type dominates the voicing. When analyzing these, discuss the overall interval structure. Which interval(s) occur the most? Is there a pattern to the structure? Revoicing: Often a sonority can be revoiced (reordered) to emphasize different intervals. For instance, G-B-D-F-A is a stack of 3rds, but F-G-A-B-D emphasizes 2nds. Always analyze the voicing in the music itself. SPECIAL CASES: Mixed-interval chords and revoicing FOURTHS/FIFTHS: Quartal/quintal Chords A quartal/quintal chord is any harmonic sonority whose voicing emphasizes fourths and/or fifths. Open-fifth chord : Triad lacking the third (root + fifth only). Notes may be doubled. Quartal chord : "Stack of Fourths" Notice any quartal stack can be reordered as a quintal stack. C G D A E Quintal chord : "Stack of Fifths" E A D G C Scriabin's "mystic"chord : Favored by composer Alexander Scriabin. OR # $ $ $ # #
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Transcript of 06-07-ChordsHarmonicSonorities
8/12/2019 06-07-ChordsHarmonicSonorities
http://slidepdf.com/reader/full/06-07-chordsharmonicsonorities 1/1
LearnMusicTheory.net 6.7 Chords and Harmonic Sonorities
Copyright © 2011 by Mark Feezell. All Rights Reserved.
1. Chord or sonority = any group of notes played at the same time.2. Voicing = The vertical spacing/arrangement of notes in a sonority. Usually emphasizes 2nds, 3rds, or 4ths/5ths.
SECONDS: Secundal Chords
A secundal chord is any harmonic sonority whose voicing emphasizes major and minor seconds or sevenths.
A tone cluster is a secundual chord voiced as a stack-of-seconds in a single octave.
A whole-tone chord is any chord (in any voicing) drawn entirely from any single whole-tone scale.
and and _ _ _
...all come fromthis whole-tonescale.
More examples of secundal chords:
Tone cluster with 2 notesraised an octave
Based on a series of seconds (B-C-D-E-F),with the C doubled.
A-B-C-D-E-F,with the pitch Araised an octave.
Overwhelminglysecundal, despitethe P4 (D-G) andM3 (C-E).
THIRDS: Tertian Chords
Added-note chord :One or more notes areadded to a primarilytertian sonority. Above:"A" is an added 2nd.
A tertian chord is any harmonic sonority whose voicing emphasizes major and minor thirds.
You should know triads and 7th/9th/11th/13th chords (see earlier chapters). Here are more tertian chords:
Split-third chord :Triad or 7th chordwith major ANDminor 3rds. Above: F minor + F major (voicing varies).
Chord with
split members:Triad or 7th chordwith note(s) a m2away from root, 3rd,5th, and/or 7th. Above: B (=C ) is the split 5th.
Polychord:Two or moresimultaneoustriads. Above:C and D .
Stravinsky's"Petrushka"chord:Polychordwith two triadsa tritone apart,here C and F .
Mixed-interval chord = No single interval type dominates the voicing. When analyzing these, discuss the overall interval structure. Which interval(s) occur the most? Is there a pattern to the structure?
Revoicing: Often a sonority can be revoiced (reordered) to emphasize different intervals. For instance,G-B-D-F-A is a stack of 3rds, but F-G-A-B-D emphasizes 2nds. Always analyze the voicing in the music itself.
SPECIAL CASES: Mixed-interval chords and revoicing
FOURTHS/FIFTHS: Quartal/quintal Chords
A quartal/quintal chord is any harmonic sonority whose voicing emphasizes fourths and/or fifths.
Open-fifth chord :
Triad lacking thethird (root + fifthonly). Notes may be doubled.
Quartal chord :"Stack of Fourths"
Notice any quartal stack canbe reordered as a quintal stack.
CGDAE
Quintal chord :"Stack of Fifths"
EADGC
Scriabin's "mystic"chord :Favored by composer Alexander Scriabin.
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