Porcupine Tree kicked of the band's late-summer 2010 U.S. tour with an incredible two-hour show at the Warfield Theater in San Francisco on Thursday August 12. They played music from throughout the band's long history, including several more obscure songs from the earliest period. I spoke with Wilson backstage before the show, where he talked about his live rig, and his philosophy of live versus recorded tones. To stream or download an mp3 of the conversation click here.