Arranged By - Billy Strayhorn (tracks: C1, D2) , Duke Ellington (tracks: A1 to B5,)
Banjo - Fred Guy (tracks: A1 to B1)
Clarinet - Barney Bigard (tracks: A1 to C1, C3, C5, D2, D4) , Harry Carney , Jimmy Hamilton (tracks: C2, C4, D1, D3, D5, D6) , Johnny Hodges (tracks: A1 to C1) , Marshall Royal (tracks: B5) , Otto Hardwick (tracks: B2 to B4)
Clarinet [Bass] - Harry Carney (tracks: C2, C4, D1, D3, D5, D6)
Cornet - Rex Stewart (tracks: C1 to C5, D2 to D6)
Directed By [Director] - Duke Ellington
Double Bass [String Bass] - Jimmy Blanton (tracks: C1, C3, C5, D2, D4) , Junior Raglin (tracks: C2, C4, D1, D3, D5, D6) , Wellman Braud (tracks: A1 to B5)
Drums - Hillard Brown (tracks: D1) , Sonny Greer (tracks: A1 to C5, D2 to D6)
Guitar - Fred Guy (tracks: B2 to D6)
Piano - Billy Strayhorn (tracks: D2, D4) , Duke Ellington (tracks: A1 to D1, D3, D5, D6)
Saxophone [Alto] - Harry Carney (tracks: A1 to C1, C3, C5, D2, D4) , Johnny Hodges , Otto Hardwick (tracks: B2 to B4, C1 to D6)
Saxophone [Baritone] - Harry Carney
Saxophone [Bass] - Otto Hardwick (tracks: B2 to B4, C1, C3, C5, D2, D4)
Saxophone [Soprano] - Johnny Hodges (tracks: A1 to C1, C3, C5, D2, D4)
Saxophone [Tenor] - Al Sears (tracks: C2, C4, D1, D3, D5, D6) , Barney Bigard (tracks: A1 to B5) , Ben Webster (tracks: C1, C3, C5, D2, D4) , Jimmy Hamilton (tracks: C2, C4, D1, D3, D5, D6)
Trombone - Claude Jones (tracks: C2, C4, D1, D3, D5, D6) , Joe Nanton , Lawrence Brown (tracks: B2 to D6)
Trombone [Valve] - Juan Tizol (tracks: A1, A2, A4, B2 to C1, C3, C5, D2, D4)
Trumpet - Arthur Whetsol (tracks: A1 to B5) , Cootie Williams (tracks: A1 to B5) , Freddy Jenkins (tracks: A1 to A5, B2 to B4) , Ray Nance (tracks: C1 to D6) , Shelton Hemphill (tracks: C2, C4, D1, D3, D5, D6) , Taft Jordan (tracks: C2, C4, D1, D3, D5, D6) , Wardell Jones (tracks: C1, C3, C5, D2, D4)
Violin - Ray Nance (tracks: C1 to D6)