The different floors have different themes, separated by sound proof glass. The main floor is house music, the third is hip hop, one of the floors had Latin music, and the roof top had an open view of the night sky had no music (which was nice if you needed a break).
It was great dancing the night away. One of the girls I went with is an amazing hip hop dancer. She looked so cool in the club, I'm sure it emphasized my absolute lack of dance skills. I really enjoyed the glazed over look other people would get, when they saw her awesome moves, and couldn't take their eyes off her. I desperately wish I could dance, and have been working really hard at it lately, but I'm fairly certain I am missing whatever gene she has that allows here to move more than two body parts at a time to music.
If you're looking for an awesome club in Madrid, Teatro Kapital is great. There are lots of tourists there, which means you'll here and see lots of English, but it's a great environment, good DJ's, and packed floor.