Conversation so far:
Is Simon in England an album or an actual trip to England?
Simon to move to England.
What did he do in england?
He toured the small folk clubs.
Was he still performing music?
released "He Was My Brother.
Did he release any successful songs?
The Sound of Silence.

Question: When was this released?
Self-contained rewrite: When Simon & Garfunkel's The Sound of Silence released?