Jonsi & Alex performed the "Midnight Mix" melody. Very short, exactly 1 minute long composition holds a lingering sound of whether violins or xylophone. If you want to feel the obscure satisfaction of musical creation, or you just want to listen to something bright and short – this composition is an ideal candidate for this. It does not linger in the brain, but allows you to feel relaxed.
Reference: Stream Jónsi & Alex's 'Midnight Mix' Off 'Aloha' Soundtrack Premiere on PureVolume.com