Stories to fall asleep to … Perhaps, if the sound of a severed head on a petrol pump gets you off. These short works, commissioned by the Guardian and John Lewis, have been turned in to podcasts for which I did sound and music. The idea is you don't reach the end, which is a perhaps a counterintuitive challenge for an author. There are going to be five in all, but here's a link to the second, by John Burnside, and the first one, by Will Self.