I listened to the last disc of The Pet Sounds Sessions on Monday, and I discovered that my post about the melisma'd "sighs" in "Don't Talk (Put Your Head on My Shoulder)" was incomplete. I neglected to notice that the following line has a similar feature. The "eyes" in "And I can see so much in your eyes" is also sung with a melisma (Bb Ab Gb), so there's a musical sense of "so much" in the "eyes."
When I transcribed some of the song on Monday, I also discovered a couple things about the chorus. In the first iteration, the last line is "Don't talk, take my hand, and let me hear your heart beat," but when the chorus is repeated, this becomes "Don't talk, take my hand, and listen to my heart beat." There's a sort of parallelism between "let me hear your heart beat" and "listen to my heart beat." Additionally, "heart beat" could be understood as two separate words (a noun with a verb) or a single word (a noun).
