 The band toured the U.S. from April to August 2003 , including Jenny Lewis in the line @-@ up for all but one of the performances . Lewis provided vocals as well as guitar and keyboards . In the sole performance that Lewis missed , a festival in Spain , friend Joan Hiller sang and Chris Walla played her guitar and keyboard parts . Death Cab for Cutie bassist Nick Harmer was in charge of the tour 's visuals . Tamborello later said in an interview that Gibbard had been nervous about touring , as the audience may have been bored by what they saw as " a guy with a computer onstage " . This was partly the motivation for using visual effects such as videos and lights , which included small films for each song . 
