Doc Wiley

Arnold Burke "Doc" Wiley (October 3, 1898 – October 1964) was an American ragtime, blues and rhythm and blues musician, actor and political activist from the 1910s to the 1960s. Although Wiley may not have scored any notable hits during his long career, he was notable both for the sheer length of that career, which stretched from the ragtime era to the early years of rock and roll, and for his ability to constantly adapt his style to these changing tastes.   Wikipedia