The velvety vocals of Nat King Cole, the buoyant doo-wop of The Cadillacs, and the sweetly rousing harmonies of The Everly Brothers all contain the DNA that helped create Simon & Garfunkel. Follow Bob Dylan's “The Times They Are A-Changin'” with The Beatles' “I've Just Seen a Face” to hear echoes of the duo's perfect folk-pop hybrid, blending personal poetry with lilting melodies.