PSG has been played on NTS in shows including Slime w/ Little, featured first on 24 June 2018. Songs played include エスケープ From 東京 and PSG現る 1972.

There are four PSG's:

PSG is a hip hop trio unit, Itabashi-ku, Tokyo. Consist PUNPEE, S.L.A.C.K. & GAPPER.

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

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 sounds as dark, deep and calls it "All Downer…