Following a series of Eps on Ultra Music last year, Boris Brejcha returns to his own Fckng Serious label with this storming two-tracker. "Up Down Jumper" is a powerful track: based on a menacing bass, it sees Brejcha add in subtle snare rolls and a mysterious, building synth to create an ominous but effective arrangement. The German producer opts for a similar approach on "Keep Rollin"; instead of musical elements on this occasion, he chooses searing acid lines. Combined with a grainy low end and doubled-up claps, the end result is a compelling combination that is certain to be a staple of Brejcha's DJ sets