Sandro Perri is a Canadian musician and producer from Toronto. Perri's music combines long-burn drones, submerged rhythms and various instrumental sources (slide guitar, strings, accordion). He also records as Polmo Polpo and as Off World. Between 1999 and 2002, Perri released a series of 12"s (by Cog, Dot Wiggin, and Polmo Polpo) on his own Audi Sensa label. These early Polmo Polpo tracks were compiled and re-issued on CD in 2002 by Alien8 Recordings, after which Perri began work on a proper full-length, issued by Constellation in 2003.