Fans were invited to discover the line-up for the festival by first downloading the free Aurasma app, before pointing their smartphones at a series of posters across Scotland, and press ads throughout UK.

They could then watch the festival ad image melt away revealing a video announcing this year's acts, including Stone Roses, Florence and The Machine and Noel Gallagher's High Flying Birds in a different dimension. At the end of the video, fans were invited to share and to ...