The movement doesn't have to be all that great. The Director of the Men's Chorus I sing in plays a wonderful "Store-front" piano amd his whole body "plays" the music. I kid him that if I held his elbows, he couldn't play, because he seems to get his rhythm and drive from his elbows. Some people can't sing or play without tapping their feet. Hold their feet down, and they'd be powerless.

Jerry