JD Sports Fashion, the U.K.-based retailer, and Kano, the British rapper, are helping Adidas to celebrate the 50th anniversary of its Superstar shoe. Their collaboration, called “3 Bar Superstar,” amounts to a talent search. This February, a mobile recording booth has been stopping at three malls in the U.K. – Manchester Arndale, Westfield Stratford and Birmingham Bullring – to enable consumers to record three musical bars of their own composition over a three-bar section of one of Kano’s rap songs. All of this is to symbolize Adidas’ iconic three bars, or its three stripes. Adidas is accepting musical submissions through a website. The winner of the contest will be mentored by Kano to take part in a recording session with him.