trombone Don "Sugarcane" Harris – violin Jean-Luc Ponty – violin Ruth Underwood – percussion, vibraphone George Duke – keyboards Tony Duran – rhythm guitar Harper May – bass guitar Erroneous (Alex Dmochowski) – bass guitar Jack Bruce – bass on "Apostrophe'" (see controversy presented above) Ralph Humphrey – drums (side one) Johnny Guerin – drums on "Excentrifugal Forz" Aynsley Dunbar – drums on "Uncle Remus" and "Stink-Foot" Jim Gordon – drums on "Apostrophe" Back-up vocals Lynn (Linda Sims) Robert "Frog" Camarena Ruben Ladron de Guevara Debbie (Debbie Wilson) Ray Collins Sue Glover Kerry McNabb George Duke Napoleon Murphy Brock Tina Turner (uncredited) Production staff Cal Schenkel – artwork, graphic design Barry Keene – engineer Kerry McNabb – engineer, remixing Ferenc Dobronyi – cover design Bob Ludwig – technician Paul Hof – technician Oscar Kergaives – technician Brian Krokus – technician Mark Aalyson – photography Bob Stone – transfers, digital remastering Steve Desper – engineer Terry Dunavan – engineer Zach Glickman – marketing Bob Hughes – engineer Charts References External links Lyrics and information Release details 1974 albums Albums produced by Frank Zappa DiscReet Records albums Frank Zappa albums Albums recorded at Electric Lady Studios Albums recorded at Bolic Sound