I recently experienced an insatiable urge for some Sigur Rós, and when you experience such an urge where better to go than Ágætis byrjun? And it truly is a magical album, but my favorite track is so majestic, so fantastic, it must be heard rather than discussed. Here's Olsen Olsen, the eighth track off Ágætis byrjun, which has very strong roots in classical music. It's also secretly about the Olsen twins, but everyone already knows that.
Sigur Rós - Olsen Olsen