Today, as is the case on every first Tuesday of the month, Club Aerobics are giving away a brand new free single. This month's edition, "Bubble Up", comes from Hot Mom USA boss and turntablist extraordinaire Shiftee. He's been featured here before, both on his own and as one half of E.A.S.Y., and with good reason. Besides being world-renowned on the decks, Shiftee is also one hell of a producer, delving into the worlds of hip-hop, house, trap, grime and a whole bunch of other styles. On "Bubble Up" the polymath beatsmith has built the entire thing from scratch, including the vocals which have been warped and mutilated beyond recognition. Beneath that sits a complex pattern of frenetic scratching and shuddering drums that give the track an industrial footwork edge. Keep an eye on Club Aerobics for more free drops each month.

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