Nicholas George Gravenites (born October 2, 1938, 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, Mike Bloomfield and several influential bands and names of the generation springing from the 1960s and 1970s. He currently resides in Occidental, California.