Congealing from smoky club haze, "Shake Your Body Down" quickly catches fire as its main riff peeks around the corner, remnants of the smoke tickling sweet nothings in your ears. It's not the quick-spreading kind of flame that ravenously consumes, but rather a slow-burning element rising from underneath the track. It simmers and crackles, titular chants breaking out as the song rolls to a boil and that riff finally emerges in all its glory. It's a warm, dulcet sound that evokes an entire history of house music, as likely to induce introspective pondering as it is dancing. It comes from a different place entirely, but I can't help but compare it to Tensnake's "Coma Cat" from earlier this year—it's the same sort of impossibly catchy, rapturously invigorating progression, only filtered through classic house instead of disco.
Poor "Twilight" on the b-side has a lot to live up to, and it sounds like a b-side in the old rockist tradition; darker, weirder, less approachable. It coasts on a linear drum machine that immediately paints the track as less invitingly human than "Shake," and it utilizes jagged low-end undulation instead of the blissful restraint of its counterpart. Think something like Stefan Goldmann's "The Maze," only less punk and more prog. Still, the vintage percussion is that magical mix of warm and robotic, and the song's repetition—underpinned by decaying, filtered strings—is at the least hypnotic. Nostalgia may be reaching a fever pitch in 2010, but Prime Numbers have lit the flames anew with yet another of their alchemical miracles.