1 Thoroughbred
2. Spaced
3. Love In the Open
4. Variation on the Misery
5. Blues In Orbit
6. Proclamation
7. General Assembly
8. So Long
Gil Evans - piano, electric piano, arranger, conductor
Johnny Coles (tracks 1 & 5), Mike Lawrence (tracks 2-4 & 6-8), Ernie Royal (tracks 1 & 5), Snooky Young (tracks 2-4 & 6-8) -
trumpet
Garnett Brown (tracks 1 & 5), Jimmy Cleveland, Jimmy Knepper (tracks 2-4 & 6-8) - trombone
Ray Alonge (tracks 1 & 5), Julius Watkins (tracks 2-4 & 6-8) - French horn
Howard Johnson - tuba, baritone saxophone
Hubert Laws - flute (tracks 2-4 & 6-8)
Billy Harper - tenor saxophone
George Marge - flute, tenor saxophone (tracks 1 & 5)
Joe Beck - guitar (tracks 2-4 & 6-8)
Gene Bianco - harp
Herb Bushler - bass
Elvin Jones (tracks 2-4 & 6-8), Alphonse Mouzon (tracks 1 & 5) - drums
Sue Evans, Donald McDonald - percussion