Hey y'all, thanks for the writeup! As the composer (not orchestrator) of the lullaby, I thought I'd chime in for context if you were curious.
I actually wrote the piece based on the preview chapters before release. I knew Brandon's father in law wrote the lyrics, and I thought it would be fun to set to music before the book came out, so a reader who searched for it while reading would have at least one take on how it could sound.
Because of that, I had NO clue about Shallan singing it again. So, when I wrote it, it was from the perspective of a broken man comforting a child during a highstorm. The second, orchestral part, was me imagining zooming out from the residence and sensing the scale of the storm sweeping across Roshar, and eventually diminishing as they always have.
That being said, the cool thing about art is that it can evoke anything and it's never wrong, really, because every experience and listener is different (see Hoid storytelling to Kal, for example).
I hope you enjoy and thanks for supporting the project!
-Alex