There are four PSG's: 1. PSG is a hip hop trio unit, Itabashi-ku, Tokyo. Consist PUNPEE, S.L.A.C.K. & GAPPER. 2. PSG is a Breton acoustic guitar trio consisting of Patrice Marzin, Soïg Sibéril and Jean-Charles Guichen. A former member is Jacques Pellen. See also: Marzin Sibéril Guichen 3. There's also Finnish alternative rock band called PSG. http://www.myspace.com/psgbandfin Furthermore, there is one Japanese group of this name. The group describes its Read more on Last.fm