Okay, let's start with the good. Aau's Song looks great as far as design. The story is okay. Nothing special.
Okay, now that we got the good out of the way. Throughout the second season of Visions, the animation has been terrible. Whether it was CGI, stop-motion or CGI disguised as stop-motion, the animation has been choppy to say the least. It's like Disney tried to save money by taking out half the frames or by doing without in-between animators. And Aau's Song has maybe the worst animation from the whole season. I don't know if it's because of the animation in the Spider-Verse movie or what, but it seems this new style of animation is here to stay. And it's horrible. I don't know if it's the use of computers to animate, rather than than traditional cel animation. I don't know if it's cheaper. Don't know if people actually like this style or what. But for me, it's terrible, just terrible.
Bottom line; except for 2 or 3 episodes, this season was almost unwatchable due to this bad animation. Take also into account that most of the episodes were terrible story-wise too. Very disappointed, considering season 1 was fantastic.