Mysterious hardware tinkerer Stephan "STL" Laubner is back with three tracks and a locked groove on the London-based imprint Mutual Friend Recordings. "Mind Puzzlin" is exactly that, with a luscious, twisted lead line accompanied by STL's signature rough and overdriven percussion. The repeated guitar plucks of the more ominous "Smile Function" will plant themselves into your consciousness. STL builds the groove expertly while retaining an otherworldly feel. "Wrong" is a real groover with a growling bassline accompanied by weird and wonderful synth patterns. The locked groove, titled "Listen Up! Loop," is a nice bonus for the more adventurous DJs out there.