Copenhagen is one of the coolest cities in Europe right now, and it’s no coincidence that the Danish capital is also home to Apeiron Crew, a four-strong DJ collective who formed two years ago after meeting behind the counter of a record shop in Nørrebro. Najaaraq Vestbirk makes up one quarter of Apeiron under the nom de discotheque Courtesy, taking a hard, dark and physical approach to the floor with an all-killer tunes policy and a dash of electro filth to keep the fun levels peaking. Before playing FACT’s stage at Found Festival in London on June 11, Courtesy has made us a blinding mix featuring some forthcoming gems on Ectotherm, the label she recently founded with Apeiron’s Mama Snake, Drafted’s deliriously brilliant ‘Vortex Empire’, and a tune set to go down as one of the year’s best, ‘The Frontier’ by Avalon Emerson. (They’re mates, in fact – Vestbirk recorded the mix round Avalon’s place.) “I wanted to present a mix that captured what it’s like to hear me play a sweaty 3am set, with all the nuances that comes with a live vinyl and CDJ set,” Vestbirk says. “Like any DJ, I use the crowd and their energy level to inform my track selection, something that’s difficult to manufacture in a living room. That said, this is pretty damn close to what it’s like to hear me bang it out in a club.” If you’re heading to Copenhagen this year, look out for the miniature record outlet Vestbirk is opening with Mama Snake at the Los cafe on Guldbergsgade, set to open in late summer.