Vorbis is one of two artists:

1)Also known as OGびーふ, vorbis is a member of the circle OG-G Music Works and produces hardcore doujin music, mostly remixes of game music.

http://www14.ocn.ne.jp/~kokusan/O.M.W/

2)Vorbis is an Industrial/abstract/conceptual music project begun by Tyler Theus as a part of tiredCONCEPT audio. So far, he is the only member. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.