tracks 1 to 12 alto saxophone, baritone saxophone Plas Johnson
tracks 13 to 24 arranged by Gerald Wilson
tracks 13 to 24 arranged by Rene Hall
tracks 25, 26 baritone saxophone Jewell Grant
tracks 1 to 26 bass Red Callender
tracks 1 to 24 drums Earl Palmer
tracks 25, 26 drums Edward Hall
tracks 1 to 24 guitar Bill Pitman
tracks 1 to 12 guitar Howard Roberts
tracks 25, 26 guitar Irving Ashby
tracks 13 to 24 guitar Rene Hall
tracks 1 to 24 organ Ernie Freeman
tracks 1 to 12 piano Paul Smith
tracks 13 to 26 piano Ray Johnson
tenor saxophone Plas Johnson
tracks 25, 26 trombone John Ewing
tracks 25, 26 trumpet John Anderson
tracks 1 to 12 vibraphone Gene Estes
tracks 1 to 12 vibraphone Larry Bunker
tracks 1 to 12 vibraphone Victor Feldman
tracks 25, 26 vocals Ernie Freeman
Tracks 1-12 from the Capitol album This Must Be The Plas!; recorded March 11, 13 & 23, 1959.
Tracks 13-24 from the Capitol album Mood For The Blues; recorded May 18 & June 21 & 27, 1960.
Tracks 25, 26 are bonus tracks, recorded July 15, 1957.
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