Sun 02 July
These guys are musical wizards. Type alt and J on an Apple keyboard and you get Δ, the Greek letter delta. It's the scientists' symbol for a change in value. We can be forgiven for saying that alt-J has done something similar with the history of pop. The British trio have created their own universe from the highlights of the last 60 years. They're as expert and inventive as Sigur Rós or The xx, and Werchter is the ideal place for this fairytale world. Here's what Humo said after the band's first appearance in 2013: “How much aching beauty can a person take, and how much sugary emotion? Alt-J will change your life in The Barn.” And this is from Moustique in 2015: “Alt-J rentre dans la cour des grands.” Alt-J reach their tenth anniversary in 2017.