The first time I saw code that make shapes and colours respond in time to music was when my University friend (and Best Man) Ross showed me a plugin on his Mac that (I think) was from a software house called Cthulhu. These days iTunes and Windows Media Player have the same functionality only better, but how cool would it be to put a music visualisation across a whole building? Thanks to SwissMiss for the link:

lights on from thesystemis on Vimeo.