I vote for Chuck Berry's Maybelline as the first Rock'n'Roll song.http://www.youtube.com/watch?v=8RAfxiyMKAkBut ok, that "That's All Right" song is VERY Rock'n'roll. Abusive comment hidden. (Show it anyway.)
http://www.youtube.com/watch?v=8RAfxiyMKAk
But ok, that "That's All Right" song is VERY Rock'n'roll.