"I've never had the chance to pick up an instrument myself..." It isn't exactly what the Wen clan specializes in. He had been made fun of by other members of his clan enough without having to draw any more attention to himself.

And aside from that, playing music well requires a lot of soul. His is incomplete.

"Were there not any that looked particularly... interesting? Or strange?" No giant pink fruit-shaped string instruments? Probably not. It would have been mentioned already.