In November 1967, “Blue Note” label released “Boss Horn”, the 13^th Blue Mitchell album. It was recorded in November 1966, at “Van Gelder Studio” in Englewood Cliffs, New Jersey, and was produced by Alfred Lion.

Personnel:

• Blue Mitchell – trumpet
• Jerry Dodgion – flute, alto saxophone
• Junior Cook – tenor saxophone
• Pepper Adams – baritone saxophone
• Julian Priester – trombone
• Chick Corea – piano 
• Cedar Walton – piano
• Gene Taylor – bass
• Mickey Roker – drums
• Duke Pearson – arrangements

Track listing:

1. Millie – Duke Pearson
2. O Mama Enit – Blue Mitchell
3. I Should Care – Sammy Cahn, Axel Stordahl, Paul Weston
4. Rigor Mortez – Dave Burns
5. Tones for Joan’s Bones – Chick Corea
6. Straight Up and Down – Chick Corea