But don't expect Penny Lane part two. According to the Associated Press, this is a 14-minute experimental song containing distorted guitar and gargling sounds -- and even includes McCartney and Lennon shouting "Barcelona!" and "Are you all right?"
McCartney says that while recording, he told his bandmates to "just wander round all of the stuff and bang it, shout, play it. It doesn't need to make any sense."
So, fans of What's the New Mary Jane and Revolution 9, you may just get your companion piece!