What is the Sound of Silence?

What does silence sound like? Well, Simon and Garfunkel wrote and sang a song about that. The song "The Sound of Silence" was featured on the album "Wednesday Morning, 3 am" and talks about man's lack of communication with his fellow man. It took Paul Simon half a year to write the lyrics. Although the album tanked initially, that song was reworked and eventually became a number one hit.