01. Peaches en Regalia
02. Willie the Pimp
03. Son of Mr. Green Genes
04. Little Umbrellas
05. The Gumbo Variations
06. It Must Be a Camel
Frank Zappa – guitar, octave bass, percussion
Ian Underwood – piano, organus maximus, flute, all clarinets, all saxes
Captain Beefheart – vocals on "Willie the Pimp"
Jean-Luc Ponty – violin on "It Must Be a Camel"
Don "Sugarcane" Harris – violin on "Willie the Pimp" and "The Gumbo Variations"
Max Bennett – bass on all tracks except "Peaches en Regalia"
Shuggie Otis – bass on "Peaches en Regalia"
John Guerin – drums on "Willie the Pimp", "Little Umbrellas" and "It Must Be a Camel"
Paul Humphrey – drums on "Son of Mr. Green Genes" and "The Gumbo Variations"
Ron Selico – drums on "Peaches en Regalia"
Lowell George – rhythm guitar (uncredited)
Dick Kunc – engineering director
Cliff Goldstein, Jack Hunt, Brian Ingoldsby and Dick Kunc – engineers
Cal Schenkel – cover design
Cal Schenkel, John Williams – design
Frank Zappa – arranger and producer
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