This Sunday at 7PM, CBS will air The Beatles: The Night That Changed America - A GRAMMY Salute, a star-studded extravaganza celebrating 50 years since The Fab Four performed on CBS's own The Ed Sullivan Show and entered the American pop culture lexicon forever.
But all this week, the network has been gearing up for the program with Beatles tribute performances on the Late Show with David Letterman.
First up, on Monday, was Broken Bells covering "And I Love Her," with the assistance of Ringo Starr.
The following night, Sting performed "Drive My Car," with the help of Ivy Levan. Mike Einziger of Incubus joined them on lead guitar.
Wednesday night's performance was Lenny Kravitz covering "Get Back."
And last night, the Flaming Lips and Sean Lennon–son of John and Yoko–performed "Lucy In The Sky With Diamonds."
Letterman's Beatles week is set to wrap up with tonight's show at 10:35, which will feature a final Beatles cover performance by Ms. Lauryn Hill.
For more information about the 50th anniversary celebration on Sunday, go here.