sentences:  On December 5, 2006, Slipknot released its third DVD "".While Slipknot was on hiatus, several band members again focused their attentions on side projects; vocalist Taylor and guitarist Root returned to Stone Sour, drummer Jordison toured with several bands and produced 3 Inches of Blood's third album "Fire Up the Blades", Crahan founded Dirty Little Rabbits and Wilson returned as DJ Starscream once again.Preparation for Slipknot's fourth album began towards the end of 2007; work began at Sound Farm Studio in Jamaica, Iowa, with producer Dave Fortman in February 2008.