David Letterman continued his week-long tribute to the Fab Four with a performance from the Flaming Lips, who were joined by Sean Lennon to cover “Lucy In The Sky With Diamonds.” Throughout the week, Broken Bells, Sting, and Lenny Kravitz have also graced the Late Night stage to commemorate the 50th anniversary of the Beatles’ arrival in America. Lauryn Hill will perform the final show tonight and CBS will air The Night That Changed America: A Grammy Salute To The Beatles on Sunday. Watch the performance below.