Rumor has it Built to Spill developed a serious reggae fixation in the five years since their last CD, which is rarely good news for a rock band (witness the Stones’ dubious Jah-flavored Black and Blue). Happily, the ska-leaning ”Mess With Time” aside, You in Reverse finds leader Doug Martsch leaving BTS’ indie-prog-jam-band formula largely unmolested. On the other hand, tracks like hypnotic slow-burner ”Goin’ Against Your Mind” and the jaunty ”Conventional Wisdom” are more enjoyably organic-sounding than most of 2001’s too pristine Ancient Melodies of the Future.