This is Paul McCartney performing "Back In The USSR" on Late Show with David Letterman on July 15, 2009. This performance wasn't shown on the television episode. Also see him performing "Get Back" and "Sing The Changes".
July 16, 2009
Paul McCartney performs "Get Back" and "Sing The Changes" (from Electric Arguments) on the Marquee of the Ed Sullivan Theater on July 15th, 2009, for Late Show with David Letterman. The Ed Sullivan Theater (earlier known as CBS-TV Studio 50) is the site where The Beatles famously performed on February 9, 1964, for the Ed Sullivan Show.