I found two previous animations by this person about six months apart.
The last one
https://www.youtube.com/watch?v=AH7Kx6bnHwE&spfreload=1is more two-dimensional and the mouth movements are the best I've ever seen, and moving into three dimensions for the next project was super-audacious and very well executed. Description says this is six months of work, hundreds of hours poured in and while I don't know how many hours others pour into theirs, i think most other animators spend two or three years on a project like this.
This Sam Studio seems to be from China and is a real up-and-comer and I think we can look forward to more amazing work that blows our socks off. While this particular video has some imperfection in the physical realism, I'm sure he? is going to get a lot better with more practice and it's already far better than most other stuff I've seen....in particular the part where the pony goes from sitting down to standing up while turning around....just a hugely difficult dynamic rotating move to accomplish and it's done so matter-of-factly here and it's just so amazing.
As to knowing Sia's going to be in the movie...did we know that 6 months ago? Probably a happy coincidence.
Oh yes the one from a year ago is Shiny Happiness and is tons of fun:
https://www.youtube.com/watch?v=ERkAAJ6_pXU "my little pony" sounds funny in Chinese!
and just looked at the channel and found this short, probably a learning example that's a bit of fun:
https://www.youtube.com/watch?v=OYWWGYuPgg4It's real clear that there is a lot of new talent joining in all the time and I hope to join them and do something good. I'm still just learning to draw right now though....