Premise

A celebration of the Beatles' 50th anniversary appearance on "The Ed Sullivan Show" includes a performance from Paul McCartney and Ringo Starr. Other performers: Katy Perry; Alicia Keys; John Legend; Maroon 5; Imagine Dragons; John Mayer; Keith Urban; Stevie Wonder; Ed Sheeran; Brad Paisley; Pharrell Williams. Also: a one-night-only reunion of Eurythmics' Annie Lennox and Dave Stewart.