Yndi Halda is a post-rock band out of the UK. They play some of the most stunningly beautiful music I've ever heard. It's incredibly atmospheric and even feels optimistic, something that differs them from alot of post-rock bands. The video above is a clip from one of their songs (their best, in my opinion), "We Flood Empty Lakes" - the full track is 14 minutes long. The song really reaches a climax at about 4 minutes into the clip. One of the greatest pieces of music. Ever.