Don Van Vliet aka Captain Beefheart was one of the quirkiest and most interesting musicians of the 1960's and '70's. His style was avant garde Delta blues/jazz with a Dada twist. His voice was so raspy that he made Howlin' Wolf sound like Jackie Wilson.
He was also a very talented painter as you can see below on the cover of his 1978 LP Shiny Beast (Bat Chain Puller.). In fact, Van Vliet retired his Captain Beefheart persona in 1982 and focused on his artwork for the remainder of his life:
Here's the entire LP via the YouTube: