is a multi-instrumentalist, tour manager and composer based out of the Netherlands.
Beginning his career in the late 1970s with various punk bands and collaborations with Dischord Records artists, Tos would be known for his tenure with the alternative rock band God and as a recurring contributor to the Dutch stoner rock band Beaver. Since the late 1990s he has served as a tour manager and technician for the Norwegian rock group Motorpsycho and since 2005 he has been a live keyboardist and recurring contributor to the drone doom collective Sunn O))).
