Credits

Frank Zappa: Composer, Conductor, Vocals, Lead Guitar, Arranger
Ray Collins: Harmonica, Tambourine, Finger Cymbals, Lead Vocals
Tom Wilson: Producer
Jack Anesh: Cover Design
Elliot Ingber: Rhythm Guitar, Lead Guitar
Roy Estrada: Bass, Guitarrón
Val Valentin: Director of Engineering
Jim Black: Drums
Ray Leong: Cover Photo