I'll admit it: I wasn't sure I could tolerate 48 hours of nothing but post-rock. Lots of great stuff in that scene - but all at once? Wouldn't it wear a bit thin? Well no, ArcTanGent festival was chuffing fab. My top three awesome stickers are awarded to:
Bear Makes Ninja - wow like math-rock with great indie-rock vocals and harmonies, and some blinding drumming which isn't obvious in that video I linked but you should really see.
AK/DK - a twopiece, and both of them play synths and effects and vocals and drums, shifting roles as they go to make great electro stuff totally live. Fun and danceable as hell.
Cleft - another twopiece, drums and guitar, using a loopstation to fill it out and make mathy tuneful stuff. Oh and great crowd interaction - this might violate postrock ethics but I do like a band that talks to the crowd. This crowd was pretty dedicated, they were actually singing along with the zany time-signature riffs.
Unfortunately we missed Rumour Cubes while putting our tent up in the rain, so I'll never know if they would have earnt a top awesome sticker. But loads of other stuff was also great: Jamie Lenman (from heavy to tuneful, like early Nirvana), Sleep Beggar (heavy angry hip-hop and chuffing rocking), Luo (ensemble postrock with some delicious intricate drum breaks), Year Of No Light (dark slow heavy doomy, like a black hole), Alarmist (another dose of good ensemble postrock), and Human Pyramids (sort of like a school orchestra playing postrock compositions... in a good way).
Almost all of these things I've mentioned were non-headline acts, and most of them were amazed to be in a tent with so many people digging their shit, since they were used to being the niche odd-time-signature weirdos at normal festivals :)
By way of contrast, a couple of the big names I found a bit boring to be honest, but I'll spare you that since overall the weekend was great with so much great stuff. Mono was a nice headliner to end with, enveloping, orchestral and often low-key - we were actually not "at" the main stage but sitting on a bench 50m or so up the slope. Lots of people were doing as we did, letting the sound wash its way up the hill as we took in the night.
I didn't join in the silent disco in the middle of the night but it had a lovely effect, as hundreds of people with headphones sang along to some indie rock classics, and from afar you could hear nothing except their perfectly-timed amateur indie choir, it sounded great.