Drums, Trumpet, Vocals, Other [Indian Of The Group] - Jimmy Carl Black
Drums, Vocals [Vocal], Other [Yak & Black Lace Underwear] - Billy Mundi
Electric Bass, Vocals, Other [Asthma] - Roy Estrada
Engineer [For Two Months Of Basic Sessions], Performer [Creepy Whispering] - Gary Kellgren
Engineer [Record & Re-mix For The Final Month Of Recording] - Dick Kunc
Executive-Producer - Tom Wilson (2)
Guitar, Piano, Lead Vocals, Other [Weirdness], Edited By [Editing] - Frank Zappa
Lacquer Cut By - BG
Mastered By - Bernie Grundman
Performer [Has Graciously Concented To Speak To You In Several Critical Areas] - Eric Clapton
Performer [Is The One Who Wants You To Turn Your Radio Around] - Spider
Performer [Retired] - Don Preston
Performer [Snorks] - Dick Barber
Performer [Telephone] - Suzy Creamcheese
Photography By - Jerrold Schatzberg
Piano, Woodwind [Woodwinds], Other [Wholesome] - Ian Underwood
Producer, Composed By, Arranged By, Conductor - Frank Zappa
Soprano Saxophone, Baritone Saxophone, Other [Visible On Back Cover, Road Manager, All Purpose Weirdness & Teen Appeal] - Euclid James Motorhead Sherwood
Supervised By [Orchestral Segments] - Frank Zappa
Woodwind [All Woodwinds], Other [Mumbled Weirdness] - Bunk Gardner
