djay's breakthrough Auto-Cut technology allows you to scratch your songs with a rhythmic pattern applied to it, taking the sound of your mix to the next level.
How to scratch using Auto-Cut
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Hold the vinyl record with your mouse or using two fingers on your Notebook’s trackpad.
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Move the mouse or your fingers back and forth periodically.
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Hold the Shift key (⇧) while scratching to enable Auto-Cut.
Note: the rhythm of your scratch will be in perfect sync with the tempo of the song playing on the other turntable.

If you have a Mac notebook, djay lets you take full advantage of you Multi-Touch trackpad for scratching.
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