Summary: Rebecca Dirks is on location in Chicago where she catches up with Sigur Ros guitar and bass tech Silli Ragnarsson to discuss guitarist Jonsi Por Birgisson's one-off guitar, bow and accessories, and surprisingly sparse pedalboard, bassist Georg Holm's effects-heavy pedal rig, and the more traditional guitar-board-amp setup of touring guitarist Kjartan Dagur Holm (Georg's brother).
