"Moonglow" - Jazz Standard by Will Hudson, Irving Mills and Eddie DeLange (although I doub't Irving had anything to do with it other than being manager/promoter and wanted a cut).
Sadly we don't get to play that song on the gig much anymore. I liked the chord movement and the internal descending note that followed each chord change in the verses. But as some old friend songs go out of style, new friend songs take their place.