Rock 1974.09.10 CD, LP, Cassette Live Rykodisc ASIN: B0000009SK Frank Zappa George Duke - Synthesizer, Keyboards, Vocals; Bruce Fowler - Trombone, Dancer; Don Preston - Synthesizer, Bass, Keyboards; Chester Thompson - Drums; Jeff Simmons - Bass, Guitar, Guitar (Electric), Guitar (Rhythm), Vocals; Tom Fowler - Bass, Bass (Electric); Napoleon Murphy Brock - Flute, Saxophone, Sax (Tenor), Vocals; Robert Camarena - Vocals; Ruben Ladron de Guevara - Bass, Vocals; Debbie - Vocals; Walt Fowler - Trumpet, Trumpet (Bass); Froggy - Vocals (bckgr); Ralph Humphrey - Drums; Lynn - Vocals; Ruth Underwood - Percussion, Keyboards; Ruben - Vocals (bckgr) Frank Zappa & the Mothers<br> Time 67:59 <br> Frank Zappa - Guitar, Guitar (Electric), Keyboards, Vocals, Producer