2009 two CD set containing a trio of albums from the jazz bassist: The Clown (1957), Intrusions (1954) and Pithecanthropus Erectus (1956). This year marks the 30th Anniversary of the death of Mingus. Pithecanthropus Erectus is hailed as being one of his greatest albums and it is joined in this set by Intrusions and The Clown. 13 tracks. Jazz Manifesto.