Linda,
Qicklok makes a music stand that attaches to a kb stand. It has an "l" shape to it, and a clamp that grabs just about anything. GC should have a catalog with pictures. I have one that I don't use .... if you like the unit and the price is too high, I'll sell you mine for less than theirs. (It's just like new - came from a studio that I liquidated)