Attention Mesdames et Messieurs..C'et ne pas une Bango mais une cattaaaaahchooo. Je joue au BANGO..one string, three string and five string fretless. Try tuning a hammered dulcimer violin range with three strings per note..It's not impossible just a lot longer than an auto harp..it's the overtones and note spread that gets you, depending in what tradition you are tuning to play in. By the way a good drummer can get 21 different notes out of a skin head, on a drum of course.