I really wanted to get a variety of ideas out, so i played with mostly color, type, and some minor changes int he make up of the face itself. I think that the green color scheme is working much better than the rest, especially the varying type and color. It doesn't seem as random or forced, more organic and free forming like the music itself. I think the type needs to stay sans serif but gills sans seems to be working more than anything else, the futura can be a little too bold at times. Unfortunately the red iteration's type does not pop as much as I'd like it to when printed.
As for the purple I think the colors create some sort of dreamy aspect but I think that is all it's delivering.