Eh... Uh... Erm... Yeah. Just something I did because I felt like I had to pixel something.
Edit: Now that I've had some time, I want to explain properly what I was kind of doing as an experiment.
At first I wanted to do something with a limited pallette (which didn't get accomplished in the end, and second I wanted to try shading using a completely unrelated color, and unrelated lineart color as well. | 
I like this one. It's got a raver poster in pixel kind of feel to it. Would make a good background installment to some adventure game with a response when looking at it like "Hmm... so it's true. Skulls like music too." heh Excellent work.