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Harmonic rhythm

From Wikipedia, the free encyclopedia

Two harmonizations of "Yankee Doodle"
[1] Note the slower harmonic rhythm. Play
Note the faster harmonic rhythm. Play

In music theory, harmonic rhythm, also known as harmonic tempo, is the rate at which the chords change (or progress) in a musical composition, in relation to the rate of notes.[2] Thus a passage in common time with a stream of sixteenth notes and chord changes every measure has a slow harmonic rhythm and a fast surface or "musical" rhythm (16 notes per chord change), while a piece with a trickle of half notes and chord changes twice a measure has a fast harmonic rhythm and a slow surface rhythm (1 note per chord change). Harmonic rhythm may be described as strong or weak.

According to William Russo harmonic rhythm is, "the duration of each different chord...in a succession of chords."[3] According to Joseph Swain (2002 p. 4) harmonic rhythm, "is simply that perception of rhythm that depends on changes in aspects of harmony." According to Walter Piston (1944), "the rhythmic life contributed to music by means of the underlying changes of harmony. The pattern of the harmonic rhythm of a given piece of music, derived by noting the root changes as they occur, reveals important and distinctive features affecting the style and texture."[4]

Strong harmonic rhythm is characterized by strong root progressions and emphasis of root positions, weak contrapuntal bass motion, strong rhythmic placement in the measure (especially downbeat), and relatively longer duration.[5]

"The 'fastness' or 'slowness' of harmonic rhythm is not absolute, but relative,"[6][self-published source] and thus analysts compare the overall pace of harmonic rhythm from one piece to another, or the amount of variation of harmonic rhythm within a piece. For example, a key stylistic difference between Baroque music and Classical-period music is that the latter exhibits much more variety of harmonic rhythm, even though the harmony itself is less complex.

For example, the first prelude (BWV 846) from J. S. Bach's The Well-Tempered Clavier, illustrates a steady harmonic rhythm of one chord change per measure, although the melodic rhythm is much faster.


{
      <<
      \new PianoStaff <<
        \new Staff <<
           \clef treble \key c \major \time 4/4
           \new Voice \relative c'' {
                \voiceOne r8 g16 c e g, c e r8 g,16 c e g, c e 
                r8 a,16 d f a, d f r8 a,16 d f a, d f
                r8 g,16 d' f g, d' f r8 g,16 d' f g, d' f
                r8 g,16 c e g, c e r8 g,16 c e g, c e 
                }
           \new Voice \relative c' {
                \voiceTwo r16 e8._~ e4 r16 e8._~ e4
                r16 d8._~ d4 r16 d8._~ d4
                r16 d8._~ d4 r16 d8._~ d4
                r16 e8._~ e4 r16 e8._~ e4
                }
            >>
        \new Staff <<
           \clef bass \key c \major \time 4/4
           \new Voice \relative c' {
                c2 c c c b b c c
                }
            >> >>
    >>  }

YouTube Encyclopedic

  • 1/3
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  • Ask Dr. B About Music Theory, Episode 9 (Harmonic Rhythm)
  • (HD) The Ingredients of beautiful phrasing: spacing, shaping, harmonic rhythm awareness, tone
  • Music Theory 1 - Video 19: Harmonic Progression.

Transcription

Sources

  1. ^ Porter, Steven (1987). Harmonization of the Chorale, p.9. ISBN 0-935016-80-5.
  2. ^ "Harmonic rhythm", Britannica.com. Accessed June 2013.
  3. ^ Russo, William (1997). Jazz Composition and Orchestration, p.42. University of Chicago. ISBN 9780226732084.
  4. ^ Piston, Walter (1944). Cited in Swain, Joseph P. (2002). Harmonic Rhythm: Analysis and Interpretation,[page needed]. ISBN 0-19-515087-2.
  5. ^ Randel, Don Michael (2003). The Harvard Dictionary of Music, p.377. Harvard. ISBN 9780674011632.
  6. ^ Trogan, Roland (2013). The Circle and the Diamond, p.8. Xlibris. ISBN 9781483694726.

External links

  • "Harmonic Rhythm", Bach-Cantatas.com. Examples of different harmonic rhythms from Bach given. Accessed June 2013.
This page was last edited on 16 November 2021, at 19:50
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