The group blog over at WFMU, which is kind of like this one except way more esoteric and not as well punctuated, recently featured a post containing MP3s of thirty-eight different versions of "September Song." That's the Kurt Weill song, "It's a long time from May to December/But the days grow short when you reach September," not the Earth, Wind and Fire song.
I know it from the Sinatra version on September of My Years, but I gotta say, nobody does it like James Brown (!) does here. I wonder if JB ever appeared in Mahagonny. Also of interest here is Lindsey Buckingham's version, which sounds like the Beach Boys circa 1970, for all you "Wild Honey" fans.