LEDs Blinking to Music, an old High School Project

A while back I was experimenting with getting LEDs to work with music.  At the time I didn’t want to make a complex colour organ, so I instead found a method using a few transistors.  Once the project was done I created an instructable, since I had used the site for a lot of inspiration before. http://www.instructables.com/id/Blinking-LEDs-to-Music .