Pithecanthropus Erectus is a 1956 album by jazz composer and bassist Charles Mingus. Mingus noted that this was the first album where he taught arrangements to his musicians by ear in lieu of writing everything down. [source]

Tracks on Pithecanthropus Erectus: 1. Pithecanthropus Erectus – 10:36 / 2. A Foggy Day – 7:50 (George Gershwin) / 3. Profile of Jackie” – 3:11 / 4. Love Chant – 14:59

Line up: Charles Mingus – Bass / Jackie McLean – Alto Saxophone / J. R. Monterose – Tenor Saxophone / Mal Waldron – Piano / Willie Jones – Drums