Both mechanically (referring to the look of the platforming) and in its level of technical artistry, this reminds a lot of Psychonauts. I actually loved the platforming in that game (especially Meat Circus, as it was the most pure platforming in the entire game) so this is a plus in my eyes. I've still yet to see any gameplay segments that look even mildly demanding, though, so I hope that's simply because of how early in the game all the stuff we've seen is.
Is that
Once Upon a Dream's chorus I hear around 1:15 and 2:00?