Which member of the duo who wrote "The Sound of Silence" had a musical career that spanned seven decades?
Sounds of Silence: Sounds of Silence is the second studio album by Simon & Garfunkel, released on January 17, 1966. Paul Simon:  Simon's musical career has spanned seven decades, with his fame and commercial success beginning as half of the duo Simon & Garfunkel, which was formed in 1964 with Art Garfunkel.
i don't know