When I watched Head earlier this month, I noticed that in the second verse of "Daddy's Song," the "away" at the end of the line "And the pain would go away" is sung with a melisma (C C C D C B). To some degree, this gives a musical sense of the pain's dissipating; it's no longer focused on a single pitch.
When I listened to the soundtrack recently (the 22nd), I noticed that this same melisma (slightly different when repeated) also has significance in two other verses.
In the third verse, "sighs" in the line "That he brought out all his sighs" is sung to the phrase C C D C B, indicating the multitude of "all" via the numerous notes. In the alternate version (with Mike Nesmith's vocal), the line is different: "That he brought out all his toys." Here, "toys" is sung with a slightly different articulation; I think it's just C D B. In any case, the multitude of "all" is still illustrated through the numerous notes.
In the last verse in the soundtrack version (but not in the film version, where Davy Jones sings a cappella and with a different melody), "by" in the line "Let the sadness pass him by" is also sung to the phrase C C D C B, giving a sense of movement (although the "pass[ing]... by" is metaphorical).
While drafting this post yester-day, I also noticed a new thing: "When I grew up" in the line "When I grew up to be a man" in the first verse is sung to an ascending phrase (C D E E), giving something of a musical sense of that growing up.
