Credits

Booker Ervin: Saxophone
Charles McPherson: Saxophone
Charles Mingus: Bass
Dannie Richmond: Drums
Eric Dolphy: Saxophone
Jimmy Knepper: Trombone
Paul Bley: Piano
Tommy Flanagan: Piano
Jo Jones: Drums
Roy Eldridge: Trumpet
Nat Hentoff: Recording Supervision
Bob d'Orleans: Engineer
Lonnie Hillyer: Trumpet