How do i make LEDs flash to tempo?

Ok, when I was djing at a party i thought of this cool idea of the LEDs flashing to tempo, and when the music changed (for example, 120bpm to 140bpm) the LEDs would change tempo with the music. And if it was even possible, link the arduino with Virtual DJ  so when the music changes and so does the tempo and so does the lights.

Its confusing and all over the place but it would be amazing if it was possible to link to virtual DJ. 

use the sound sensor module

sound.jpg
rickharris15 days ago

https://www.instructables.com/id/Light-Box-1/

There are a lot of instructable that tell you how to do this.

In general the search you need is sound to light.