If Denver was still around today, he'd have done his "Rick Rubin" album in the vein of Johnny Cash, Neil Diamond, Kris Kristofferson and Cat Stevens already and be reappreciated, deservedly so. Jet Plane is just three chords throughout (verse, bridge and chorus are identical) but you would never know it from listening to it, the vocal melodies create such a nice build-up. And the lyric encapsulates how you feel when you are bound on a trip away from your family and don't really want to go. Very poignant.