Raph_PH · CC BY 2.0

One half of Simon & Garfunkel, the folk-rock duo whose harmonies on "The Sound of Silence," "Mrs. Robinson," and "Bridge Over Troubled Water" defined a generation of American songwriting and carried them into the Rock and Roll Hall of Fame in 1990. Garfunkel's clear tenor was as much the group's signature as Paul Simon's writing, and after the duo split he built a solo career of his own, earning a UK number-one single and, across his catalogue, eight Grammy Awards.