On November 17th, 1964, The Beatles assembled at the Playhouse Theatre in London to record music and chat for BBC Radio's Top Gear.
During the session, Ringo accepted a phone call from American DJ Murray The "K":
Here are some outtakes from the musical portion of the session:
And here is some alternate chat with Brian Matthew, not heard in Top Gear but used in a BBC Overseas program, Top Of The Pops. A small portion of this has never been bootlegged: