Recently, I was thinking about "Can't Wait Too Long," and then I listened to the version on 1967: Sunshine tomorrow. I found two small things to write about.
"Forever" in the first line ("Baby, you know that I can't wait forever") is sung with a melisma (E D B C# B), giving a musical sense of that long period of time. Similarly, the "long" in the backing vocal phrase ("Been way too long") is sung with a melisma (alternately G# F# E and F# E D), also giving a musical sense of duration.
Both of these features are also in the version that's included as a bonus track on the Smiley Smile/Wild Honey re-issue (although, as the liner notes mention, that version is "made up of several different takes").
