I saw this and i thought YES this is very cool. Umpulsive as i am i instantly bought it only to find out later that the trombone part is only esthetic, it doesn't manipulate the sound wich i think is a bummer. The trombone doesn't respond very well to lower pitched humming, it does react very well to higher pitches. I mainly use it to annoy my girlfriend. I'll update when she breaks up with me!