Here you can compare the different musics of the games.
All the games have the same composer: Koji Kondo
|Zelda 1||Zelda 2||Zelda 3||Zelda LA||Zelda 64|
Note that it's not the title music. I don't know where this music come from, but everybody on the net consider it as "title.mid" and I didn't find the real music.
|Castle||There are one music for each castle, and anyway, I don't have any in mids :-).|
|Boss or Ganon||Ganon:||Ganon:||Boss:|
|Ocarina||There are multiples musics of Ocarina. There is no main theme.|