Rock 'n' Roll has its roots in traditionally "black" and "white" music. It has roots in the blues and in country music. So, it had appeal early on and had any number of black and white performers. Chuck Berry, Little Richard, Bo Diddley, on one side, Elvis Presley, Buddy Holly, Jerry Lee Lewis on the other side. That's just a partial list of the early rock 'n' rollers, obviously. Certainly because of the racism of the time, black performers were less able to be successful than white performers, unfortunately. I think its probably fair to say that Chuck Berry contributed more to the sound of rock 'n' roll than Elvis Presley, but Presley was more marketable at the time so he gets much of the recognition, not to take anything away from Elvis, however. But I do think that within the early scene itself, there was a lot of mutual respect between all these artists and all these influences. There was just a lot of creativity going around.