Madonna has a new record out: answer phone tapes featuring 17 minutes of erotic messages left for a boyfriend 20 years ago.

The two microcassettes are being sold by New York memorabilia company Gotta Have It! on 5th August. They are expected to fetch $40,000 as part of a large online rock 'n' roll auction.

Also included in the sale is a 15-minute "very personal and intimate video" and 21 faxes that were exchanged by Madonna and her bodyguard-turned-boyfriend Jim Albright between 1992 and 1994.

The famous white lace bustier worn by Madonna for her "Like a Virgin" tour is also up for auction, starting at $4,000.

"These are very personal items that we're showing by appointment only, and that's all I can say about it," said Gotta Have It! partner Ed Kosinski.

The 489 items will be on display online at www.gottahaverockandroll.com until August 5 online auction.

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