Bob Dylan’s new album ‘Tempest’ is out this week, complete with download and streamable versions, but there’s also been a mobile website spreading the word among fans.

It’s called Sound Graffiti, and is a collaboration between Columbia Records and New York firm CNNCTD+ to “tag the globe with Sound Graffiti”.

Eh? This means a mobile website optimised for iPhone and Android smartphones, which can be used to hear songs from the new album – but only when you’re at specific locations where ‘Tempest’ artwork has been stenciled on the street.

More than 100 locations have been tagged around the world. Technically innovative, although with the album also having been available to stream on iTunes pre-release, we wonder how many fans bothered to hunt for the graffiti to hear individual songs.