Parallel harmony

In music, parallel harmony, also known as harmonic parallelism, harmonic planing or parallel voice leading, is the parallel movement of two or more melodies (see voice leading).

Illustrative example

Lines with parallel harmony can be viewed as a series of chords with the same intervallic structure. Parallel means that each note within the chord rises or falls by the same interval.

Examples from works

${ \new PianoStaff << \new Staff << \relative c' { r2 <c e g c>(\ff <d f a d> <g b d g>2. <f a c f>4 <e g b e> <d f a d> <d f a d>2 <a c e a> <e' g b e>2) } >> \new Staff << \new Voice \relative c { \stemUp \clef bass \key c \major \time 3/2 \tempo "Sonore sans dureté" r2 <g c e g>^( <a d f a> <d g b d>2. <c f a c>4 <b e g b> <a d f a> <a d f a>2 <e a c e> <b' e g b>) } \new Voice \relative c, { \stemDown c1.-^_--~_\markup { \italic "8vb" } c~ c } >> >> }$

The "organ chords" in Debussy's tenth prélude, La cathédrale engloutie

Prominent examples include:

Claude Debussy's Beau soir (1880), Prélude à l'après-midi d'un faune (1894), Nocturnes (1899), La Mer (1905), La cathédrale engloutie, "Voiles", "Feuilles mortes"
Maurice Ravel's Daphnis and Chloë Suite No. 2 (1913), "Menuet" from Le Tombeau de Couperin
Erik Satie's Le Fils des étoiles (1892)
Igor Stravinsky's The Rite of Spring (1913)
Olivier Messiaen's music features abundant planing
Richard Strauss's Elektra (1909)
Arnold Schoenberg's Pierrot lunaire, "Columbine" (1914)
William Schuman's Three Score Set for Piano (1944)
John Williams's "Rebel Fanfare" from Star Wars

In the Schuman example (Three Score Set for Piano), the inversions of the chords suggest a bichordal effect.^[2]

In the example to the right,^{[clarification needed]} we see a series of quartal chords in parallel motion, in which the intervallic relationship between each consecutive chord member, in this case a minor second, is consistent. Each note in the chord falls by one semitone in each step, from F, B♭, and E♭ in the first chord to D, G, and C in the last.

References

^ ^a ^b Cope, David (2000). New Directions in Music, p. 6. ISBN 1-57766-108-7.
^ Kliewer, Vernon (1975). "Melody: Linear Aspects of Twentieth-Century Music", Aspects of Twentieth-Century Music, pp. 332–333. Wittlich, Gary (ed.). Englewood Cliffs, New Jersey: Prentice-Hall. ISBN 0-13-049346-5.

[Cope-1] Cope, David (2000). New Directions in Music, p. 6. ISBN 1-57766-108-7.

[2] Kliewer, Vernon (1975). "Melody: Linear Aspects of Twentieth-Century Music", Aspects of Twentieth-Century Music, pp. 332–333. Wittlich, Gary (ed.). Englewood Cliffs, New Jersey: Prentice-Hall. ISBN 0-13-049346-5.

[1]

[2]

v t e Impressionist music
People	Claude Debussy John Ireland Gabriel Pierné Maurice Ravel
Techniques	Bitonal chords Parallel chords Pentatonic scales Unprepared modulation Whole tone scale
Compositions	Cydalise et le Chèvre-pied Jeux d'eau L'isle joyeuse La mer Nocturnes Prélude à l'après-midi d'un faune Préludes (Debussy)
Other	Modernism (music) Romantic music

Illustrative example

Examples from works

See also

References