The song Cell Block Tango from the movie Chicago mixed with anime.
THIS IS NOT MINE.
Also, anyone who keeps asking what the animes are, I typed them down, so please, STOP ASKING. This video was made by the very talented and uberly kind KittyNeko9. Checkout her videos! They rock. Out loud. :3
Also, the animes were (in order) Armitage, Tenchi Muyo, Excel Saga, Angel Sanctuary, Inuyasha, and Hana Yori Dango.