To those who find Jónsi Birgisson-lead Icelandic ensemble Sigur Rós boring, I say: open your ears. There's an archaic language and a bowed guitar for crying out loud. Also, the whole "we did Explosions in the Sky before Explosions in the Sky" thing. The eleven-piece took the neighboring bass thumpers at Perry's stage to task with a set that expanded and contracted through a wide range of material from Ágætis byrjun and Takk and a few records in between. Though it was a bit insulting to both the band and the audience to have to stare at such a brutal and smelly landscape during this opulence, the sonic output certainly managed to lift minds and moods upwards, away from the muck and the mire, and toward the heavens. The culminating blasts were as heavy as any rockers I'd witnessed—the delicate flutterings lovelier than any folk act. And there were strings—a load of them—presumeably Icelanic folk band Amiina (though I haven't been able to confirm that). It was one of my favorite sets of the entire weekend. And judging by the open-mouthed awe exhibited by many of those around me, I'm guessing I'm not the only one.