We all know the 1956 Tom and Jerry short. Down Beat Bear now has an unexpected Japanese fan-made counterpart... with CGI characters from The Touhou Project.
Is there a correlation? I don't think so. But I have to say, NicoNico user Doterapotto (どてらぽっと) did a great job with the timing and syncing, copying everything properly. The clip was made using an animation software called MikuMikuDance.