Massively framed by the enormous and intricate cover art, the four silent Chicagoans seemed to teach us all a lesson in how to deliver the heaviest and most atmospheric of music using just stringed instruments, drums and electricity. No head was left un-nodded in the 013 building as they blew away most of the competition with such furiously focussed cyclopean riffing that a crack nearly appeared in the Dutch sea walls 60 miles to the west. One hour of faultless instrumental rock. I felt hugely privileged. To quote any young American - 'fucking awesome'. The Sleeping Shaman'. Three years later they returned to the festival to play 2015 album Miserable front to back with the same crowd reaction.