"Just Once in My Life"

I listened to the two-albums-on-one-CD re-issue of 15 Big Ones and Love You yester-day, and I noticed an interesting feature in the synth bass part in "Just Once in My Life."  About halfway through the first verse, there's a chromatic phrase (Eb D Db):

This is the only spot where this happens.  In the other phrases in this verse and in the entirety of the second verse, that Eb is a quarter note.  This instance immediately follows the line "I've given up on schemes 'cause ev'ry one fell through," and so in a way, this chromatic descent mirrors that "falling through," even if music takes this falling a bit more literally than the lyrics do.