If you're interested in learning how to say things like treble clef and name different sorts of notes in Japanese, here's a fun guide I found. It's aimed at Japanese kids so even some simple kanji is missed off, but it's still good for learning some other words、and pretty funny.

http://www.musicable.net/seminor/theory/index.htm

音楽理論を勉強しようぜ！

Hmm, this looks really useful. I'm an advanced pianist, and this'll be reading material that is interesting and on my subject.