I posted these links elsewhere, but figured they should go here, too! Beautiful music by a Finnish composer, incorporating birdsong recorded near the Arctic Circle in Finland. I think it goes well with any of the SSSS sequences showing wild places, especially the Finland settings of course.
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Appropriately enough, the conductor is Hannu Lintu - his surname translates as "Bird"!
For the music nerds, here's a version that shows the score, which is really interesting. The birdsong is hard to hear in this version, though, so to get the full effect I recommend listening to the other one first.