Thumbplay is currently offering an exclusive selection of tracks from Bob Dylan’s bootlet collection: The Bootleg Series Vol. 9 – The Witmark Demos. All Blackberry smartphone users will be able to listen to 15 previously unreleased recordings from the new album, but only until Thursday September 30.

Users can access these exclusive tracks by searching for the Thumbplay app on their device or by going to their website.

Disclosure: Thumbplay is one of our partners here at RouteNote.