These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Awesome Music: When you're outcasts from society sitting around in a castle, music and theater is pretty much the only entertainment you've got. This was shown prominently in the movie, with musicians being cast instead of actors for many roles. Songs can be found here.
The Fair Folk almost kidnapping Ronia. In the movie, they start making eerie sounds as the mist drags in, whispering "come", and Ronia starts walking in a trance, mumbling "I'm coming..." all the while.