"Kokomo"

Last night, I figured out the chords for "Kokomo."  The song is in C major, but there's a D major chord at the end of the line "That's where ya wanna go to get away from it all."  The F# in the D major is an accidental, and so there's a musical sense of foreignness that matches the notion of "get[ting] away from it all."

I also noticed that "go" in the line "That's where we wanna go" is sung with a melisma (C G A), musically giving a sense of movement.