No, that's not a typo. It is a saxophone-type instrument played like a trombone. It uses a rubber glove as the vibrating membrane with the casing of a ball point pen as the mouthpiece. PVC tubing for the resonator, and a mousetrap to help hold the slide in place. I can only get 3 notes out of it so far (a third), so I need to figure out a way to get more notes from it. The sound is pretty neat.