Biography
Gran Turismo 5 is a video game with a soundtrack by various artists. See http://musicbrainz.org/release/0648587c-7f2e-47bf-a43a-031ede65afad.html for a list of artist.
If this non-artist appears in your charts, do last.fm and yourself a favour. Fix your tags by putting the actual artist name in the artist field.
Biography text from Last.fm, available under CC BY-SA.