"Don't Let Me Down"

I recently started the section of Mark Lewisohn's The Complete Beatles Recording Sessions about the Get Back sessions, so yester-day, I watched the video for "Don't Let Me Down":

It occurred to me that some of the "down"s are sung with descending melismas (either E C# B or F# E C#), musically giving a sense of the word's meaning.

"I'll Be Back"

Last night I figured out some of the brass parts for the Buckinghams' cover of "I'll Be Back."  This morning I was still thinking about the song, and I realized something that also applies to the Beatles' original.  "Surprise" in the line "But I got a big surprise" is sung with a melisma (D C# B), and that extra note helps musically represent the "big[ness]" of that surprise.