we re not sure who s behind the mysterious ac-exp project, but the shadowy figure returns with more of that strange, submerged house music he s been tickling discerning djs with over the past few years. after taking last year off, 1a is a fine place to start things up again with a strutting jack track carrying acidic synth pulses that flirt with measured delay processing. its a jam that sounds steamy and sinister all at once. 1b maintains this restrained but seductive vibe with the slightly trancey throb of the lead synths pivoting around the snappy drums to great effect.