Reach the indicated player or character level to unlock the corresponding music track.

Blazed Up Melpomene: Reach Helena Level 15.
Eternity: Reach Kasumi Level 6.
Grand Style: Reach Leifang Level 6.
Hitohira: Reach Kasumi Level 12.
I Don't Believe It: Reach Zack Level 6.
Moonlit Lady: Reach Kokoro Level 7.
Natural High: Reach Jann Lee Level 9.
Physical System: Reach Player Level 52.
Result: Reach Player Level 54.
Showdown: Reach Player Level 48.
Tehu Tehu: Reach Ayane Level 12.
The Shooted: Reach Hayabusa Level 10.
Trip: Reach Jann Lee Level 7.
True Beauty: Reach Tina Level 9.
Ultimate: Reach Player Level 46.