The eighty-fourth classical recording: #852 Richard Strauss - Metamorphosen
Metamorphosen starts delicate, a few strings playing the theme, and in a Germany at the end of World War II, that feels fitting as something sombre. It builds to that though, and while it continues to have the same sombre undertone, the strings playing against each other creates something more sinister, perhaps panicking a bit at times. The variations of the piece aren't really metamorphoses, but it seems like you can ignore the title there - it's the sounds that make it fairly morose but engaging, not quite comforting, but fitting the time it was written in.