Gorgeous, glorious stuff from Sigur Rós

Have some glorious Sigur Rós, on Jools Holland's show performing "Hoppípolla" and "Með blóðnasir" (per Wikipedia, those titles translate out of Icelandic and into English as "Hopping into Puddles" and "I Have a Nosebleed," respectively). That's obviously Amiina providing support (the lovely ladies on strings, vocals, and several other instruments), along with a horn section and additional chorus that may or may not have a separate identity. And it's gorgeous, gorgeous stuff.