Nick Gravenites

Nicholas George Gravenites (pronounced /ɡrævɨˈnaɪtɨs/; born October 2, 1938 in Chicago, Illinois), with stage names like Nick "The Greek" Gravenites and Gravy, is a blues, rock and folk singer–songwriter and is best known for his work with Janis Joplin and other influential bands of the generation springing from the 1960s and 1970s. Nick currently resides in Sebastopol, California.

Details: http://en.wikipedia.org/wiki/Nick_Gravenites