Although a relatively easy-going song, Zero 7's "In the Waiting Line" perfectly captures the conflicting nature that exists between Large and his surrounding environment. Thus, while he's taking medication for his 'disorder', Large struggles to find passion while caught in this dream-like state. This completely corresponds with the methodical, yet captivating music of the Zero 7's, as they will no doubt cast you into a delightful ambiance of synthesizers and downtempo jazz.
I've featured Simon & Garfunkel before, and for good reason. Not many other bands/duos have the chemistry and the ability to write such captivating lyrics so easily, and their song "The Only Living Boy in New York" seems to be made for this scene. There's just something about standing in the rain on the edge of the abyss that shout's EMPOWERING, LIBERATING, and INDEPENDENT. So just watch the scene, then you'll know what I'm talking about.
As for the ending scene, there simply aren't words to describe the brilliance and harmony of this moment. So, while Frou Frou's song "Let Go" is no doubt a foot tapper, it also holds a great philosophical meaning which urges us to seize all the life has to offer. Thus, while many others are too busy writing their own tragedy, we as human beings most learn to live more in the moment, and stop worrying about the scripts that society has laid out for us. Hopefully this will represent an empowering moment for you guys as well, as I truly believe that this world needs a little more individualism and spontaneity.
P.S. While I did not mention any other songs, I would definitely urge everyone to check out The Shins. They had a number of tunes in the film, and truly deserve any bit of attention they receive!