Replaces Ichigo bankai awakening song with Number 1 ost
Replaces Aizen awakening song to Treachery ost
Replaces Aizen Reawakening song to Stand up be strong ost
Made changes to the music duration so it goes through all the way to the end instead looping in a short duration.

Copy/paste bgm.bnk into BLEACH Rebirth of Souls\Sound
Copy/paste the wem files into BLEACH Rebirth of Souls\Sound\Media

Credit:
CoolGuy589
Gamebanana.com