Well, there actually are some like [name_u]Banjo[/name_u], [name_f]Cadence[/name_f], Oboe, but I don’t think they are good name. Have you thought of using your favorite musician’s name, e.g. Cobain, [name_u]Presley[/name_u], [name_u]Lennon[/name_u]? I think it is a better idea.
I met a boy named [name_u]Rhythm[/name_u] once. I thought it was a neat name. There is also [name_f]Raga[/name_f] (a Sanskrit term for melody), Coda, Anthem, Tenor, Soul, [name_m]Octavious[/name_m], [name_m]Canon[/name_m], [name_u]Haydn[/name_u], [name_m]Amadeus[/name_m], [name_m]Johann[/name_m]/ [name_m]Sebastian[/name_m], [name_m]Frederic[/name_m], Handel, Strauss, [name_u]Lennon[/name_u],
You could use the name of a well known composer. They have some brilliant names (at least I think they’re brilliant :P). E.g. [name_m]Wolfgang[/name_m], [name_m]Amadeus[/name_m], [name_m]Frederic[/name_m], [name_m]Ludwig[/name_m] etc. Or maybe the name of a mode (type of scale) in music:
[name_u]Dorian[/name_u]
Aeolian (Ay-oh-lee-uhn)
Locrian
Ionian
Other than that I can only think of [name_m]Apollo[/name_m], the name of the Greek (and [name_m]Roman[/name_m]) god of music, and [name_f]Allegro[/name_f].