The fourth sampler from Ben Sims' mammoth Tribology mix features another four of the must-have exclusives from this crucial document of contemporary techno. Function leads the way with "Introversion", a spooky and sleekly designed deep driver marked out by thin slithers of displaced vocal. Tripeo plays the opposite tact with a bright and bold synth hook front and centre of the mix on "Sequoia", and then Truncate trickles down a pattering array of drum machine rhythms and fluttering melodic chimes on the stunning "Rings." Blasha & Allatt bring the tough stuff to the B2 with the jacked up energy of "Broughton 93" - their debut appearance no less and a very strong one at that.