This program (written by Ali Nikrang for Mozarteum Kultur GmbH) visualizes a piano performance in realtime using the “Color theory” by Scriabin.
You can see here a few examples. (In this case the program uses a standard midi-file and an ePiano to play it.)
Notes and Colors:
C : Red
C# D Flat : Violet
D : Yellow
D# E Flat : Steel colors with metal shine
E : Whitish-blue
F : Red, dark F# G Flat : Blue, bright
G : Orange-pink
G# A Flat : Purplish-violet
A : Green
A# B Flat : Steel colors with metal shine
B : Similar to E
2. In your sketchbook, draw one hour to music and note on the side or back of page the type and musicians you were listening to while drawing.