- "The Grand Wazoo" – 13:20
- "For Calvin (And His Next Two Hitch-Hikers)" – 6:06
- "Cletus Awreetus-Awrightus" – 2:57
- "Eat That Question" – 6:42
- "Blessed Relief" – 8:00
- Frank Zappa – guitar, percussion, vocals
- Mike Altschul – woodwind
- Billy Byers – trombone
- Chunky – vocals
- Lee Clement – percussion
- George Duke – keyboards, vocals
- Earl Dumler – woodwind
- Aynsley Dunbar – drums
- Tony Duran – guitar, bottleneck guitar
- Erroneous – bass
- Alan Estes – percussion
- Janet Neville-Ferguson – vocals
- Fred Jackson, Jr. – woodwind
- Sal Marquez – bass, trumpet, vocals, brass
- Joanne Caldwell McNabb – vocals, brass, woodwind
- Malcolm McNabb – trombone, horn
- Janet Neville-Ferguson – vocals
- Tony Ortega – woodwind
- Joel Peskin – saxophone, woodwind
- Don Preston – Mini Moog
- Johnny Rotella – woodwind
- Ken Shroyer – trombone, brass, contractor and spiritual guidance
- Ernie Tack – brass
- Ernie Watts – saxophone, woodwind
- Robert Zimmitti – percussion