Kate Nash, Kaki King, Shout Out Louds, alexisonfire, Metric, Maxwell and Jill Scott, Glee Live!, LCD Soundsystem, Regina Spektor, Broken Bells photos from respective band websites. Photo of Ozomatli by martica on Flickr, licensed under Creative Commons. Photo of Joel McHale by mrhooks on Flickr, licensed under Creative Commons. Photo of a-ha by alexandre_allfotos, licensed under Creative Commons. Photo of Patrick Watson by alterna2 on Flickr, licensed under Creative Commons. Photo of Them Crooked Vultures by julioenriquez on Flickr, licensed under Creative Commons. Photo of Voxtrot by senor_codo on Flickr, licensed under Creative Commons. Photo of Sharon Jones and the Dap-Kings by the_junes on Flickr, licensed under Creative Commons. Photo of Imogen Heap by poptech2006 on Flickr, licensed under Creative Commons. Photo of Nickelback by sezzles on Flickr, licensed under Creative Commons. Photo of Coheed and Cambria by Mr. Juninho on Flickr, licensed under Creative Commons. Graphic by Gus Wezerek / North by Northwestern. Production by April Daley, Emily Kellner and Ryan Reid / North by Northwestern.