MUTO a wall-painted animation by BLU

MUTO is a short film by Blu an animation painted on public walls. Made in Buenos Aires and in Baden (fantoche). This is basically evolving graffiti art using stop frame animation, I presume, I would love to know how long this took to capture. I have done some animation and it can get very laborious. If you like this there are a few more by the same artist and others @ http://www.blublu.org/ be warned some of this artwork could be classed as disturbing.