Are you sure it's a white guy. The only guitar player I know of for Ike was Joe Louis Walker. You see, Ike was a great guitarist himself. And also credited with recording the very first true rock and roll song Rocket 88. He usually played guitar himself with his band Kings of Rhythm. He was at Sun records for a while, and they ma have slipped in an extra guitar player, but Joe is the only one I know that played guitar besides Ike.