Fiery Furnaces revolve around the brother and sister duo of Matthew and Eleanor Friedberger, whose prickly childhood relationship and musical family set the stage for their playful, unpredictable music. The Friedbergers' grandmother was a musician and choir director at a Greek Orthodox church near the family's home in Oak Park, IL; their mother, who had a penchant for Gilbert & Sullivan, played piano and guitar and sang; and throughout school, Matthew played standup bass. While the Friedbergers weren't the closest of siblings growing up, after college and separate trips abroad they returned to...