[David Hart]

If you can rig up a bellows strapped to one arm, with a tube leading to a bag as in bagpipe under the other arm, with its output tube connected to the mouthpiece, then that would look very impressive. But in reality, I’d have thought you’d be as well to just use an accordion on single-reed setting. If you can get one with a cassotto, that might get you a slightly more melodica-ish sound.