For the composer this may be the most important page.
This list is of some of the different ways I have used the I ching
as a resource for music compositions.
I.
Scale is obvious.
II.
Form
In using a recording program, like digital performer, that I use, a whole composition can be shrunk down so it can be viewed on one page. Here you can see the hexagram +,+.-,+,-,-

++++ ++++ -------- ++++ ------------- --------------
In the particles section of my opus 159, Waves and Particles, the Yin or
receptive energy is slower and therefor is the longer sections.
III.
Chords & Arpeggios
My I Ching arpeggios CD is still popular after ten years. This is done with a pattern the is based on the relationship between the scale and the harmonic series a simple versions of a major scale would be 1, 9, 5, 21, 3, 27, 15 and then 2 so then the harmonic signature of the c major scale would be C, G, E, D, B, F, A (from low to high)
IV.
Rhythm
This seems obvious also,
but there are two main ways to interpret the I Ching patterns as rhythm.
would be
or 
I prefer the first version above, it seems more accurate to the I Ching and the music become more complex; less normal
V.
Like Wagner, I have an archetypal melody for each
Hexagram
VI.
I have a whole set of little piece
called I ching rhythm patterns
VII.
In some of my newest work like Opus 170 I Ching (#27) Meditation & Dance (icmd27) I am using the four basic sound types (Sine wave, Square wave, Triangle wave and Saw tooth wave) as a main part of the piece, sort of replacing the string section with a computer generated sound group. (None of these pieces have been recorded yet).
VIII.
My Opus 148 "One -hundred-twenty-eight Amens" takes us from the universal fundamental "F" through the harmonic series up to the 128 partial each step takes us through a simple chord progression in each of the 64 hexagrams and then some . . .
IX.
Work in progress (March 2011)