James Alfred Conrad Cammack Jr. (born April 15, 1956) is an African American bassist, from the region of Cornwall, NY.He is the bassist for the Ahmad Jamal Trio, which includes the founder, Ahmad Jamal and drummer, Idris Muhammad. Cammack both records and tours with the trio. Mr Jamal's trio essentially became a quartet with the addition of percussionist Manolo Badrena at the time of the release of Jamal's "Rossiter Road". The drummer Kenny Washington was added in 2010 on the recording "A Quiet Time". Cammack had served in the United States Military Academy Band as a buglar and as bassist in the Jazz Knights.