An-other thing I noticed when I listened to the stack-o-vocals Pet Sounds tracks a couple days ago is that "sighs" in the line "I can hear so much in your sighs" in "Don't Talk (Put Your Head on My Shoulder)" is sung with a melisma (C Bb A). Because "sighs" is sung to three notes, there's a musical sense of the one word's having "so much" in it.
Additional note: I learned the bass part for "Don't Talk (Put Your Head on My Shoulder)" two years ago, but - of course - I didn't write it down and forgot it. On Friday night (when I wrote this post), I relearned it and made sure to write it down. In my notation, I wrote the key as Eb minor (so the C# and G# notes I mentioned in my original post are actually Db and Ab notes), but I'm not very confident that that's right. The song doesn't really resolve, and there are a slew of accidentals (the bass part has every pitch but G), both of which make it difficult to identify the key.
