IRC-Galleria

6 Power gem guardians all have names now: 1. Ahakona, 2. Lady Yoko, 3. Deremeraldo, 4. Min-sinzu, 5. Lodi, 6. Gilgamesh.

Also there's music for 3 first ones now(Gilgamesh's in first post):

Ahakona: http://www.youtube.com/watch?v=NM6DClLQaow

Lady Yoko: http://www.youtube.com/watch?v=7nRocYkjyRk

Deremeraldo: http://www.youtube.com/watch?v=byAMHl1U4_Q

EDIT: Forgot to add "rare monster encounter music", you sometimes encounter these, they harder than normal bosses, but easier than big bosses, usually drop something good when defeated.
http://www.youtube.com/watch?v=QmZ11O0Enmc