Smart DJs Use Mathematics to Mix the Perfect Beat (Op-Ed)::

Deadmau5: probably does his sums. Credit: The Cosmopolitan of Las Vegas, CC BY-ND View full size image

This article was originally published at The Conversation.The publication contributed the article to Live Science's Expert Voices: Op-Ed & Insights.
People are very good at moving in time to a beat. When you listen to your favourite song, you will probably find yourself nodding your head or tapping your foot along almost instinctively.
And when you’re doing it in a club, that piles pressure on your DJ. That DJ has to mix two songs together to maintain a common beat between the tracks if they want to keep the audience dancing. If they do a bad job of the mix, the two beat lines from each song won’t blend into each other. The most likely result of such a faux pas would be an instantly empty dance floor