Who was behind most of the music for the 1967 film 'The Graduate'?

Explanation

'The Graduate' from 1967 is about a young man, played by Dustin Hoffmann, who is seduced by family friend Mrs. Robinson. Simon and Garfunkel were behind most of the music for the soundtrack, including the songs 'Mrs. Robinson' and 'The Sound of Silence'. The line 'Mrs. Robinson, you're trying to seduce me, aren't you?' was in 2007 elected one of the best film lines ever by Premiere magazine.