Portrait of British musician John Lennon and his wife, artist and musician Yoko Ono (extreme left) as they attend an unspecified rally in Hyde Park, London, England, 1975.
(Photo by Rowland Scherman/Getty Images)

A collection of never-before-heard John Lennon interviews are going up for auction later this month. The set of reel-to-reel tapes includes 91 minutes of interview footage with the ex-Beatle and his wife Yoko Ono, conducted by Canadian journalist Ken Zeilig in 1969 and 1970.

Most of the footage has never been heard before – only about five minutes were ever broadcast.  Lennon talks about his musical influences, the Beatles’ future, and even the time he got his first harmonica as a child.

The tapes will be auctioned off on Sept. 28th, and are expected to sell for as much as $40,000.

If you could interview a Beatle, what questions would you ask?