Phantasy Star Online: Blue Burst Soundtrack - Saint-Milion Battle Theme (Alternate) 

I do not own Phantasy Star Online or anything related to it. Everything to do with the series belongs to SEGA and Sonic Team, and I do not claim ownership of any of it.
Played during the fight with Saint-Milion's rare (and quest-specific) forms, Kondrieu and Shambertin.