Algodoo

Nice job, rorziz. I do have a suggestion for you. Rather than have all the dancers moving exactly the same way, mix it up a bit, so that it looks more natural and that they are not glued together.

Oh, and a couple more things I noticed. It was not clear that I was supposed to click on those up and down arrows. I thought I was supposed to press the UP and DOWN keyboard keys because that's usually how it's done in most other scenes that use UP and DOWN arrows. It would prevent confusion if you show text that reads "Click on up or down arrows to change BPM".

Another thing is, you really do not need to add four planes in order to blacken the background. Simply select the background and make the color black. Then uncheck the "Display Clouds" checkbox to disable the Algodoo clouds.

That's it!