bought Manga Studio Debut off amazon for $10. Now I'm messing with it to see what I like. Love the drawing tools... for everything else, I think I'm sticking with photoshop.
Warm-up sketch experiment. I let various music played on the ALL SONGS CONSIDERED 24/7 channel decide the direction of this. First I treated it as various shapes (like looking at clouds for something recognizable. Then I would tighten up what I eventually saw, letting the music help determine brush type, color, line weight and final theme.