Alright, as an experienced older sister...
Not the drums!
Really. Yes, bands are always looking for drummers, so he'll always be popular if he's even half decent, but you as a parent will never ever read peacefully again. Drums are louder than you'd think.
Mind you, music is an excellent way to increase creative and positive thinking. And most musicians are very intelligent. Get him an instrument, just not the drums. Or the piccolo...
