With Pin Ups turning 40 this October, BBC Radio 6 Music is broadcasting a never-heard-before David Bowie mock-radio show recorded back in 1973 as a promotional tool for the album.

The show will be exclusively broadcasted on the network and at bbc.co.uk/6music tomorrow (October 23rd), and it features Bowie himself turning DJ during the 15 minutes of its length, playing five tracks of the album (The Pretty Things' 'Rosalyn', Them's 'Here Comes the Night', The Yardbirds' 'I Wish You Would', The Merseys' 'Sorrow' and The Who's 'I Can't Explain'), and sharing his insights on London's music scene at the time.

"I discovered it during some research several years ago," explains Nigel Reeve, who oversees Bowie's back catalogue. "It was in an old tape vault on 1/4" tape with simply the words 'Radio Show' written on it. This is such a rare find. No one knew of its existence, apart from David and Ken. To play it for the first time was quite simply a jaw-dropping moment."

The Pin Ups Radio Show will also be used by BBC Radio 6 to celebrate a day of cover versions: 6 Music's Breakfast Show presenter Shaun Keaveny will play the first part of the promo at 9.30am, followed by further clips through the day in Lauren Laverne, Radcliffe & Maconie and Steve Lamacq's shows, with the final part airing on Marc Riley's programme in the evening. It will be available to listen online until midnight of October 27th.

See Also: David Bowie - 'Love is Lost' (James Murphy remix)