After a quick search at Google I found the soundtrack of Phantom Breaker: Battle Grounds.
Phantom Breaker Battlegrounds OST.rar (http://www.mediafire.com/download/f9nbigc28xsxdcj/Phantom+Breaker+Battlegrounds+OST.rar)
I don't know if it's the original soundtrack or gamerip and there aren't tags at the mp3 files but it's better than nothing.

Thanks for sharing.