American rock band Thirty Seconds To Mars have collaborated with photo editing app PicsArt to launch an Edit Challenge, promoting the band's new single Walk On Water.

Fans are encouraged to take part in the challenge by using the app to 'remix' at least one of the band's free-to-edit images to be in with the chance of winning a special merchandise pack. The competition closes September 1, and Jeff Roberto, head of marketing at PicsArt commented 'The PicsArt community produces hundreds of thousands of remixes a day and some of the best edits come from our challenges. We're showcasing that creativity with things our community is most passionate about, like music. We’re excited to see what Thirty Seconds To Mars fans create!'.