" critic Robert Ray once said, “What’s interesting about rock & roll is that the truly radical aspect occurs at the level of sound. ‘Tutti Frutti’ is far more radical than Lennon’s ‘Woman Is the Nigger of the World,’ and the sound of Bob Dylan’s voice changed more people’s ideas about the world than his political message did. "

― Greil Marcus , The History of Rock 'n' Roll in Ten Songs