Paul McCartney wants to release a long-lost Beatles song that many thought was just a myth.
John Lennon had produced some rather experimental stuff during his tenure with the Beatles, and fellow Beatle George Harrison released a little-known album called Electronic Music while still with the band (years before what most people remember as his debut album, All Things Must Pass). But apparently Paul McCartney, known for being the more conservative songwriter in the band, had his adventurous side, too.
McCartney (wasn't he the guy in Wings?) recently told the BBC that he has a master tape of a long lost Beatles track, called Carnival of Light, which had been recorded for an electronic music festival in 1967. He described it as having been inspired by the aleatory electronic music of composers John Cage and Karlheinz Stockhausen. McCartney said that he told his bandmates to "just wander around all the stuff, bang it, shout, play it, it doesn't need to make any sense. Hit a drum then wander on to the piano, hit a few notes, just wander around. So that's what we did and then put a bit of an echo on it." Yeah, a bit of echo always helps. 
McCartney said he had wanted the track to be included as part of the Beatles Anthology albums, but the other surviving band members nixed that idea. He will need approval from Ringo and from Lennon's and Harrison's estates to release the track now.
My guess is that this is going to sound less like "I Am The Walrus", "Strawberry Fields Forever", or Abbey Road's side-two medley, and a lot more like a cross between "Revolution 9" and "You Know My Name, Look Up The Number".
