Al Grey – trombone
Billy Mitchell – tenor saxophone
David Burns (# 1–5), Donald Byrd (# 6–8) – trumpet
Bobby Hutcherson – vibraphone
Herbie Hancock (# 6–8), Floyd Morris (# 1–5) – piano
Herman Wright – bass
Eddie Williams – drums
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"Nothing But the Truth" ; 3:20
"Three-Fourth Blues" ; 5:23
"Just Waiting" ; 2:57
"R. B. Q." ; 4:58
"Green Dolphin Street" ; 4:19
"Minor on Top" ; 6:50
"African Lady" ; 4:29
"Hi-Fly" ; 9:22
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Recorded at Birdland, NYC on January 31, 1962 (# 6–8) and Ter-Mar Studios, Chicago, IL on February 19, 1962 (# 1–5)