Composing Music by William Russo: Chapter 11

Organum

Organum is the name for two or more voices that share the same rhythm and move by the same interval.

I modeled this next piece after Russo's Example H in Composing Music, pg. 124-125.

Measures 1-8 make up the small theme, which is divided between the clarinet and the bassoon.

Measures 9-10 show the bassoon in perfect fourths below the melody.

Measures 11-12 show the clarinet in perfect fifths above the melody.

Measures 13-14 show an inexact organum of the lower sixth in the bassoon.

Measures 15-16 show the clarinet a minor third above the melody.

Measures 21-22 are in unison.

Measures 23-24 are in octaves.

Measures 27-28 are in unison.