Mattias Olsson – Drums and percussion (1991–1994, 2002–2003, 2009–2012)
Swedish record producer and progressive rock musician Mattias Olsson has since the late 90s recorded several albums that features the Orchestron and Optigan prominently.
Staffan William-Olsson | Stefan Olsson | Nigel Olsson | Mattias Svensson | Mattias Hargin | Per Olsson | Mattias Olsson | Mattias Eklundh | Mats Olsson | Anders Olsson | Mattias Olsson (musician) | Mattias Öhlund | Mattias Modig | Mattias Karlsson | Mattias Johansson | Mattias Gardell | Mattias Eliasson | Mats Olsson (journalist) | Martin Olsson | Lars Olsson Smith | Bror Julius Olsson Nordfeldt | Arne Olsson | Anders Jacobsson and Sören Olsson |