The original title of the song "The Sound of Silence" by Simon & Garfunkel was actually "The Sounds of Silence" with an added "s" at the end. It was initially released in 1964 on their debut album, "Wednesday Morning, 3 A.M." as "The Sounds of Silence." However, the song didn't gain significant popularity until it was reworked and re-released in 1965 with a new arrangement, including electric instruments, on the album "Sounds of Silence." The reworked version became a major hit and is the one most commonly known and referred to today.