mini organ from harmonica
I had an idea other day concerning harmonica. Why couldn't one take a harmonica, run air tubing from an air source, one tube to each hole of the harmonica, use some sort of valves that can be triggeered by a keyboard, Voila, mini organ. I am not interested in doing this myself but I think it could be pretty cool. For one thing I think it would make a harmonica capable of playing multi note chords. Some that would be impossible to play by mouth.