This is the MAGIC Telescope on the Canary Island La Palma, which is a so-called Cherenkov Telescope and measures Gamma-Rays from the most violent processes and objects in the universe. I captured this time lapse during my last measuring shift. The music is from Tchaikovsky's 6th symphony (Symphonie pathétique), the 2nd movement, a waltz "with a twist". If you don't hear the twist, then try to dance a waltz to it and you will find out quickly!