DIY Laser Show

Years ago when I was in high school a friend (Dave) and I put together a laser show as part of a battle of the bands. Actually, it was mostly Dave because he owned the computer which controlled it. Here's someone who is doing basically the same thing but these days, you don't have to hit up your physics teacher to borrow a laser. Still a cool idea. The way we did it was cooler (of course) because instead of just mounting the mirrors on a speaker to synch with the music, we had a computer where you would hit buttons and trigger your own sounds. Those sounds were preset so that you would repeat the best patterns. Since the concert was so loud and the laser speaker was up in the lighting booth you couldn't hear the computer sounds from the audience. I think.