Paul Bergstrom recorded with Frank Zappa and The Mothers Of Invention in 1966. The results can be found on "Freak Out" and on "The MOFO Project/Object".
mothers of invention: freak
(1966, 2lp, usa, verve)
|77||frank zappa: the mofo project/object
(2006, 2cd, usa, zappa records)
|78||frank zappa: the mofo project/object
(2006, 4cd, usa, zappa records)