Autumn captures the feeling of the season beautifully. I live in California so my autumns aren't very much, but the neighbor tones and compound time capture fleeting gusts and falling leaves well, and the V/vi + V/ii thrown into those wide-voiced chords gives it a vast, wistful feeling of morning fog (which we actually _do_ have!). The spread arps in the b-section make it seem like another year setting in. Great movement! The big blocks in winter are wonderful as well--I personally love when simple melodies are made so dense as such.