I'm not sure the bass part is entirely accurate, but it's pretty
close at least. Some of the vibraphone part may consist of two simultaneous
notes, but I have only single notes. I used a mellotron sound ("2
Brass") for the trumpet part.
While learning and verifying the chords, I noticed a couple things.
There are quite a few odd chords in the song, to the point that I'm not
even sure what key it's in, and that erratic nature mirrors the title
sentiment.
During the line "I must think of a way into your heart," the chord
progression is F# major | A minor | E major | G minor. This too is
quite an unusual group of chords, and it gives the impression of the
speaker/singer's use of various techniques to win the girl's affection.
"Apart" in the following line ("There's no reason why my being shy should
keep us apart") is sung with a melisma (A# A# B), musically giving
something of a sense of its meaning.