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"If you find the idea of turntablism without the hardware intriguing, but last year's surface-based TRAKTOR Scratch DJ system was just a little too abstract for your tastes, here's a rather clever compromise from Cambridge-based designerTodd Vanderlin. Using a vinyl record equipped with an AR marker, he manipulates the music by moving in front of a video camera. It's also got the added bonus of being able to control the beat across a three-dimensional space, and if you're viewing it through the camera's feed, the middle marker's replaced by pre-set visuals. Direct your browser to after the break for a video demonstration."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.engadget.com/2009/04/28/ar-enhanced-vinyl-disk-lets-you-scratch-sans-turntable/>