Current version: 3.0.
Upgradable: yes, from 2.0.
Overview: Barbarian On The Groove, or BOG, is a circle led by three members: wight, mo2 and syow (ex member – bassy). Activity of the circle is closely related with famous doujin singers like Haruka Shimotsuki, Chata, Rekka Katakiri, Marie, Kahiena and many more. Music: pop, rock, sometimes folk, relaxing or electronic tunes. In addition to the gorgeous series of original albums, they compose BGM music, as well as game songs.