https://www.discogs.com/release/6145228-Simon-Garfunkel-The-Concert-In-Central-Park
Simon & Garfunkel broke up in 1970 during the recordings of Sounds of silence. Central Park was in need of a fundraiser, and park commissioner Gordon Davis decided to organise a benefit concert. It was then decided to bring back together the old folk rock couple.
Even though Paul Simon doubted they could get back together, Art Garfunkel was enthusiastic about the idea. They got together, created a playlist with a mix of their old songs and some new songs from their solo repertoire.
The number of spectators is completely unknown. Police estimated at the time there were about 500.000 people attending the free concert. Later estimated were that only 50.000 people could fit the location. That is quite the discrepancy!