A mysterious-sounding MIDI track with bowed string instruments playing the main melody. This one took a long time to make; I came up with the first minute or so of the song one day (inspired somewhat by Freedoom's E1M8 music), then a bit more some weeks later, and it took me a few more weeks before I figured out what I was building up to. I think this would fit for an enchanted forest setting, or something like that. Named after a famous thought experiment.