How to get a boy to notice you?

[Abby]

So I like this boy in my band class. Problem is, I have never talked to him, maybe once or twice. The other day I attempted to start a conversation with him on facebook, and we actually talked! But that's the most confrontation we've ever had. He probably only knows me from that, band class, and he's in the same group of friends as my twin brother. How do I get him to notice me more?