What was the last song Lennon would ever perform for a paying audience?

John Lennon played "I Saw Her Standing There" at Madison Square Garden on Thanksgiving Day, November 28, 1974, when he took the stage at an Elton John concert. It was the last song Lennon would ever perform for a paid audience. Elton released this version as the B-side of "Philadelphia Freedom" the following year. This was the only live duet ever recorded between Elton John and John Lennon, who were good friends.


http://www.johnlennon.com/news/seeing-as-its-thanksgiving

On Thanksgiving night, November 28, 1974, John Lennon made his final live performance at Madison Square Garden, sitting in with Elton John for three songs: “Whatever Gets You Thru the Night,” “Lucy in the Sky with Diamonds” and “I Saw Her Standing There.”

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http://franklinmintblog.blogspot.com/2009/01/elton-john-madison-square-garden-with.html