This is another one of those songs (like The Sylvan Screen) where it's obvious what the songwriter was doing when they wrote the song, as it starts off with "when I look out my window". (The Sylvan Screen starts off with "every day i sit and look through my window". Someone should compile a playlist of window watching songs. Maybe me.)
There was a time that everyone said that Jimmy Page played guitar on this track, but it's actually "Hurdy Gurdy Man" in which all of Led Zeppelin (excluding Robert Plant) play on. Kind of interesting.
There's a cover of this song on The Masked Marauders' one and only album, sung horribly by a mostly decent Bob Dylan impersonator, which is kind of ironic in an Alanis Morrisette sort of way. I think I listened to about a minute of it. Supposedly a Mick Jagger impersonator comes in on it at some point, too, but I couldn't last that long to find out for sure.
This is definitely a Fall song. When all the leaves are turning orange, you bust out the Donovan and relax in the cool breeze.