Three of the earliest recordings made by singer Barbra Streisand are to be put up for auction by her ex-boyfriend.

Barry Dennen - who claims to have convinced Streisand to become a singer - made the tapes almost 50 years ago, during their 1959-65 relationship.

Dennen will be selling the recordings with a starting bid of $1m dollars.

According to Dennen, he and Streisand first met in 1959 as castmates in a Broadway play, The Insect Comedy, and began dating and living together at Ninth Street and Sixth Avenue, California.

Streisand reportedly asked him for the tapes in 1965 as they had broken up, but he had refused to give it to her.

"I said 'No. They are the only thing I have left of our collaboration,'" recalled Dennen, according to Entertainment Daily.

The tapes feature the actress singing A Taste of Honey and Two Brothers in Dennen's apartment, with him accompanying on guitar.

There is also a September 17, 1960, rehearsal at the Bon Soir nightclub, where Streisand sang Lover Come Back to Me, Nobody's Heart and Who's Afraid of the Big Bad Wolf?

"I'm a little trepidatious," Dennen confessed. "I don't know what the fallout will be. I don't like upsetting Barbra, and I don't want her fans angry at me," he said, according to the New York Post.

The online auction will happen on the website

"Our lawyers are dealing with this," said a representative of Streisand.

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