The Sleaford Mods sound is an angry voice at the back of an empty bus, swearing over freeware punk beats from a cheap laptop. Their songs are antagonistic and exasperated, pinning listeners to the wall with scattershot street poetry. Jason Williamson has emerged as the most withering urban lyricist since Johnny Rotten, and the UK's most distinctive gallows humourist since John Cooper Clarke. Caught between his wild-eyed and obscene dressings-down and spacebar operative Andrew Fearn's bass and beats, your only chance of survival is to laugh, run or change your ways.