Just found an unusual note here. The first part of the refrain line where you hear the title words is over a chord progression of I-iii-vi-I. The melody starts on the fifth scale degree for that first I chord, but then climbs up to the sixth degree (on the word "grows") for the iii chord.
That's, of course, a non-chordal tone, but it's not really used as a passing tone. (It's the emphasized note for that chord.) Sure sounds awfully natural and right.