Yaaay Bon Iver.
I have a playlist for studying. It includes shitloads of post rock, the gloomiest Cure you'll find, the happiest Broken Social Scene/Arcade Fire, Jeff Buckley, M. Ward, a lot of Conor Oberst related stuff, the gloomiest Radiohead, Grizzly Bear, Feist, Interpol, Bon Iver, Wilco...