Rock 1972.07.05 CD, LP, Cassette Studio Rykodisc ASIN: B0000009SE Frank Zappa George Duke - Keyboards, Piano (Electric), Vocals, Tack Piano; Don Preston - Synthesizer, Piano, Moog Synthesizer, Mini Moog; Sal Marquez - Trumpet, Chimes, Flugelhorn, Vocals, Concept; Jeff Simmons - Bass, Guitar, Vocals, Hawaiian Guitar; Aynsley Dunbar - Guitar, Tambourine, Washboard; Sneaky Pete Kleinow - Pedal Steel; Mike Altschul - Bass, Flute, Clarinet (Bass), Flute (Bass), Piccolo, Sax (Baritone), Sax (Tenor); Billy Byers - Trombone, Horn (Baritone); Alex Dmochowski - Bass; Tony Duran - Vocals, Slide Guitar; Erroneous - Bass (Electric), Vocals, Fuzz Bass; Janet Ferguson - Vocals; Joel Peskin - Sax (Tenor); Chris Peterson - Vocals; Kenny Shroyer - Trombone, Horn (Baritone); Ian Underwood - Guitar, Keyboards, Wind Frank Zappa & The Mothers<br> Time 36:08 <br> Frank Zappa - Guitar (Acoustic), Guitar, Guitar, Percussion, Keyboards, Vocals, Producer, Mastering