A 45-year-old duet sung by Rolling Stones frontman Mick Jagger and 70's pop icon Carly Simon has been unearthed by a collector.
A 1972 recording was found on a tape owned by Rolling Stones collector Matt Lee. The collector sent a copy to Rolling Stone Magazine, who said they would give it to Carly Simon.
The duet has apparently never before heard in public and is believed to be called "Fragile".
The finding comes two years after another unheard Rolling Stones track was discovered.