Phantasy Star Online 2 Original Sound Tracks Vol.3 is a four disc soundtrack collecting music from Phantasy Star Online 2. The music found in this soundtrack focuses primarily on elements introduced in Phantasy Star Online 2's third expansion, such as Mining Base Defense, the infected Arks Mother Ship, Dark Flaz Loser and Dark Falz Luther. Disc 1 and 2 collect themes from Mining Base Defense; disc 3 explores the soundtrack of Oracle and several boss themes from Dark Falz' new winged forms; and disc 4 closes the collection with miscellaneous battle themes, Quna songs, and Harukotan's Shironia themes.