Actually... this is pretty good animation in my opinion. The timing, the way the character poses and moves, not to mention the camera -- it all feels like the work of talented people. When she's dancing, she's never off beat for instance. I don't know what this is, but my theory, which belongs to me, is that anything bad or cheap in it is intentional. That is the theory that I have and which is mine and what it is, too.
This is made with the Vocaloid software package. It creates a virtual pop singer basically and lets you animate a music video along with having it sing. it looks like they just modified one of the character models to give it this unique style which i kind of like. The choice of "general store" as a background is questionable but i enjoyed this.