Credits

Herbie Hancock: Piano
Andrew Hill: Piano
Henry Grimes: Bass
Tommy Flanagan: Piano
Wynton Kelly: Piano
Roy Haynes: Drums
Roland Kirk: Flute, Whistle, Manzello, Nose Flute, Tenor Saxophone, Stritch
Jack Tracey: Original Session Producer
Bob Thiele: Original Session Producer
Henry Duncan: Drums
Vernon Martin: Bass