Don Roscoe Joseph III ( July 26 , 1937 -- May 26 , 2015 ) , professionally known as Rocky Frisco and Rocky Curtiss , was an American musician .
Don Roscoe `` Rocky '' Joseph III ( July 26 , 1937 - May 26 , 2015 ) , professionally known as Rocky Frisco and Rocky Curtiss , was an American musician .