Okay, we're gathering a good number of instruments here. Piano, at least the way I used to play it (mainly thumbs and pinkies) should be a fair approximation. Serious fingering impossible. Brasses (trumpet, french horn, trombone) are easy because they have only a few valve or slide positions, and the fingers or arms will follow by IK. Recorder or bagpipe: I'll take Carolly's word that the pattern will work. Fretless strings: Locating the note is a matter of superimposing a big arm pose to move up and down the neck, with a twisty hand pose to hit one of four strings. As I recall, bowing has several variations which correspond more to the loudness and style than to the note, so it will just have to be approximate. (This seems to have escaped from my original notion of "free-flowing" moves, but that's okay.... being useful is more fun than being fantastic.)

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