These tesla coils are amazing! The music is made by the sparks you see.
This video is of a band named Arc Attack (with a robot drummer) who build and use these tesla coils as their instruments.
Here’s a similar setup (looks like it’s in someone’s driveway) playing Sweet Home Alabama.
Here’s an excellent interview with Arc Attack explaining how these tesla coils work, and how the band makes them. It’s worth watching the whole thing, particularly for some electromagnetic destruction at the end.