GUIs for live improv
Musical software imimitating physical instruments is silly. Screens are 2d, so interfaces should be 2d.
sound scratcher tool allows some mousy ways to modify sound file playback with loopongs, granulation, scratching, etc. X,y axis is file selection and pitch.
Live patching. Predators is awesome game-like algorithmic players which can have live coding synths and other aspects. Many playful, expressive, imaginative interfaces. Polyrhythm player.
Very interesting environment. Also suggests evolutionary strategies for algorithnic composition.