1st would be Elvis b/c he's the king of rock n roll.
2nd would be foghat , only b/c when i was about 10 i had a record of their's that had a picture of a rock and a picture of a roll , and i think it took me a couple of years to figure out that meant rock and roll lol. .... of course i also thought the Atlanta Rythem section song "so into you" wasa saying doodoo in the pipes until i figured out it was voodoo in the vibes , but that's for a different thread.