Which member of the duo who wrote "The Sound of Silence" had a musical career that spanned seven decades?
Sounds of Silence:  Without the knowledge of Paul Simon or Art Garfunkel, electric guitars, bass and drums were overdubbed by Columbia Records staff producer Tom Wilson on June 15, 1965. Paul Simon: Paul Frederic Simon (born October 13, 1941) is an American musician, singer-songwriter and actor.
i don't know