Last night, I spent some time figuring out the bass part for "You've Really Got a Hold on Me/Bring It on Home to Me." I got further than I expected but not as far as I would have liked, if that makes sense. I figured out the bass part for "You've Really Got a Hold on Me" (although I think I missed a note), but not "Bring It on Home to Me." And I still haven't really figured out the guitar part beyond just the chords and a phrase or two.
I discovered a couple things specific to the Zombies' version. Unlike the Miracles' original (and the Beatles' cover), they don't start with the introductory phrase; they go right into the first verse. To some degree, because of that in medias res beginning, they can put in the same falling fifth (E to A) that starts "She's Not There," "I Love You," and Argent's "Free Fall."