- "The Janitor Drives a Cadillac" (Joey Covington) – 2:47
- "St. Louis Blues" (W.C. Handy) – 4:36
- "Papa John's Down Home Blues" (Papa John Creach, Roger Spotts) – 2:31
- "Plunk a Little Funk" (Creach) – 5:11
- "Over the Rainbow" (Harold Arlen, E.Y. Harburg) – 3:26
- "String Jet Rock" (Creach) – 3:46
- "Danny Boy" (Traditional) – 3:58
- "Human Spring" (James Reese, Roger Spotts) – 2:52
- "Soul Fever" (Miles Grayson) – 4:10
- "Every Time I Hear Her Name" (Roger Spotts) – 4:49
- Papa John Creach – electric violin, vocals
- Greg Adams – trumpet on "The Janitor Drives a Cadillac"
- Rufus Anderson – guitar on "Human Spring"
- Jack Bonus – saxophone on "The Janitor Drives a Cadillac" and "St. Louis Blues"
- Nick Buck – piano on "Papa John's Down Home Blues"
- Dave Brown – bass on "Soul Fever"
- Jack Casady – bass on "Plunk a Little Funk", "String Jet Rock", and "Every Time I Hear Her Name"
- John Cipollina – guitar on "The Janitor Drives a Cadillac"
- Bruce Conte – guitar on "Papa John's Down Home Blues"
- Joey Covington – drums on "The Janitor Drives a Cadillac" and "Soul Fever", congas on "Plunk a Little Funk"
- Jerry Garcia – guitar on "Soul Fever"
- Mic Gillette – trombone on "The Janitor Drives a Cadillac"
- Bobby Haynes – bass on "Danny Boy" and "Human Spring"
- Art Hillery – piano on "Over the Rainbow" and "Human Spring", organ on "Danny Boy"
- Paul Kantner – rhythm guitar on "String Jet Rock"
- Jorma Kaukonen – guitar on "Plunk a Little Funk", "String Jet Rock", and "Every Time I Hear Her Name"
- Mike Lipskin – organ on "The Janitor Drives a Cadillac", piano on "St. Louis Blues"
- Stan Monteiro – clarinet on "St. Louis Blues"
- Skip Olsen – bass on "St. Louis Blues"
- Sammy Piazza – drums on "St. Louis Blues", "Plunk a Little Funk", "String Jet Rock", and "Every Time I Hear Her Name"
- Douglas Rauch – bass on "Papa John's Down Home Blues"
- Gregg Rolie – organ on "Soul Fever"
- Carlos Santana – guitar on "Papa John's Down Home Blues"
- Peter Sears – bass on "The Janitor Drives a Cadillac"
- Grace Slick – vocals on "The Janitor Drives a Cadillac"
- Tony Smith – drums on "Papa John's Down Home Blues"
- Bob Wilson – guitar on "St. Louis Blues"
- Los Angeles String Section – strings on "Over the Rainbow"
- Los Angeles Brass Section – brass on "Human Spring" and "Every Time I Hear Her Name"
- Papa John Creach – producer, arranger
- Roger Hamilton Spotts – arranger
- Mike Lipskin – production assistant
- Ken Hopkins – engineer, mixing engineer
- Peter Granet – engineer
- Bruce Steinberg – photography
- Bill Thompson, Acy Lehman – design, concept
- Recorded at Wally Heider's Recording Studios, San Francisco & Los Angeles