Paul McCartney will celebrate John Lennon's 80th birthday next month by playing a portion of a song he and John wrote in the late '50s but never recorded.

Titled "Just Fun," he plays a part of it on his guitar during a BBC Radio 2 documentary, John Lennon at 80, hosted by his son Sean Lennon.

Paul says it was written in their early days together, adding that, "Eventually, we started to write slightly better songs and then enjoyed the process of learning together so much that it really took off.”

Paul mentioned the song briefly in the Let It Be movie when he recalled writing it with Lennon while skipping school and then sang a line of it.

And, commenting in the show on his friendship with John, Paul says, "I look back on it now like a fan, how lucky was I to meet this strange teddy boy off the bus, who played music like I did and we get together and boy, we complemented each other!”

In addition to McCartney, Sean's guests include his stepbrother Julian Lennon, and his [Sean's] godfather, Elton John.

John Lennon at 80 will air on BBC Radio 2 on October 3rd and 4th.

Lennon would have turned 80 on October 9th, which is Sean's 45th birthday.

Source: The Mirror and Premiere

photo credit - getty images