LONDON -- The British Broadcasting Corporation will air a long-lost Beatles interview featuring John Lennon and Paul McCartney talking about the day they met and their songwriting partnership.

The film sat forgotten for 44 years in a garage in south London until film fan Richard Jeffs realized a piece of pop history was contained inside.

According to the BBC, Jeffs found the film stacked among 64 unmarked cans.

Experts were surprised to find the audio portion still usable for radio broadcast.

On the recording, McCartney described the duo's songwriting process: "Sometimes we write them on old pianos or anything that's lying around, guitars and things. Normally we sit down and try and bash one out."

The nine-minute interview was recorded at the Scottish Television studios in April 1964, during the early days of Beatlemania.

Like their songs, the duo even completed each other's sentences in the interview. When asked about their early critics who suddenly came to like their music, McCartney said, "We didn't bother about them then," and Lennon finished with him, "And we don't bother about them now."

The interview will be broadcast for the first time Tuesday and repeated later this week.

On the tape, Lennon told how he was playing with a skiffle band outside Liverpool when McCartney introduced himself.

Lennon and McCartney also talked about their "new" film, which, little did they know, would go on to become a classic.

"It's called 'A Hard Day's Night' and it's at your local cinema now," McCartney said.