Seven tracks from seven bands are each pressed 100 times into 7" singles before artists design them new covers. Artists this year include Anish Kapoor and Jenny Holzer as well as London's own Paul Smith, Gavin Turk, Juno Calypso and Tatty Devine. Each very limited-edition piece of art then goes on sale on 2 May for the reasonable sum of £50 apiece, with all profits to Amnesty International. The catch? Song and artist are secret until the purchase. Check out the sleeves at Sonos Studios and for the princely sum of £50, record your own single on vinyl while you're there.