"It's Over"

Last night, I figured out some of the chords and some of the bass part for "It's Over," and I realized something that should have been obvious a long time ago: the "down"s of the "Gettin' down" parts (at ~1:35 and ~2:46) are sung to descending melodies to illustrate that "down" musically.  The first "Gettin' down, down" is sung to the phrase A C D C, and the second "Gettin' down, down, down" to the phrase A C D C A.