How many instruments did Charles Mingus play?

He's legendary as bass player, of course, but was known to play piano on some tracks (e.g. the album called "Mingus Plays Piano".) His early musical training also included trombone, cello and double bass, although by the time he had become professionally famous, these instruments had faded from his repertoire.

Mr. Mingus played two instruments bass and piano,that the only two that I'm aware of.