45 years ago Thursday (Thanksgiving - November 28th, 1974), John Lennon gave what turned out to be his final performance when he joined Elton Johnat Madison Square Garden in New York to sing "I Saw Her Standing There," "Lucy in the Sky With Diamonds" and "Whatever Gets You Though the Night."
Lennon's appearance was the result of a bet they made earlier in the year when he asked Elton to sing and play on "Whatever Gets You Thru the Night."
After the show, Elton had a surprise backstage for John -- his estranged wife,Yoko Ono, who was there with the owner of an art gallery.
Within days of the show, the couple reconciled. Their son Sean was born less than a year later. Elton is his godfather.