I re-learned the guitar part pretty easily, and in comparing it to my old recordings of the song, I discovered that I'd been missing a few things. There's a little phrase in the transitions from C major to A minor, and I'd missed an F minor.
Here's my updated recording, with (fake) French horn, guitar, and electric piano. I'm sure the electric piano part isn't that accurate; mostly I included it to fill out the sound a bit more and to demonstrate the Hohner Pianet sound I can get on my Nord Electro 5.
I notated the French horn part. At the beginning of each verse, it's:
And then it doubles the title phrase (note that this is repeated):
---&---
Here's the guitar part, a combination of tabs and chords.
Introduction
B|:-5-5-3-5-5-5-|-6-6-5-6-6-6-:|
G|:-5-5-5-5-5-5-|-5-5-5-5-5-5-:|
Verse
B|-5-5-3-5-5-5-|-6-6-5-6-6-6-|:-5-5-3-5-5-5-:|
G|-5-5-5-5-5-5-|-5-5-5-5-5-5-|:-5-5-5-5-5-5-:|
G|-5-5-5-5-5-5-|-5-5-5-5-5-5-|:-5-5-5-5-5-5-:|
B|-5-5-3-5-5-5-|-6-6-5-6-6-6-|-5-5-3-5-5-5-|-5-5-3-5-|
G|-5-5-5-5-5-5-|-5-5-5-5-5-5-|-5-5-5-5-5-5-|-5-5-5-5-|
G|-5-5-5-5-5-5-|-5-5-5-5-5-5-|-5-5-5-5-5-5-|-5-5-5-5-|
Chorus
E major | F major | F minor
The F major lasts six beats, and the F minor two; see the French horn part (specifically the A and G# in the last two measures) for a guide.
B|:-5-5-3-5-5-5-|-6-6-5-6-6-6-:|-5-5-3-5-5-5-|-5-5-3-5-|---------|
G|:-5-5-5-5-5-5-|-5-5-5-5-5-5-:|-5-5-5-5-5-5-|-5-5-5-5-|---------|
G|:-5-5-5-5-5-5-|-5-5-5-5-5-5-:|-5-5-5-5-5-5-|-5-5-5-5-|---------|
D|:-------------|-------------:|-------------|---------|---------|
A|:-------------|-------------:|-------------|---------|---3---0-|
E|:-------------|-------------:|-------------|---------|-3---3---|
The third time through, the song fades out during this repeated section.
Bridge
A minor | C major
A|---3---0-|
E|-3---3---|
A minor | F major | F minor
B|:-5-5-3-5-5-5-:|
G|:-5-5-5-5-5-5-:|
Repeat from the beginning of the verse
---&---
There are C majors under:
B|-5-5-3-5-5-5-|
G|-5-5-5-5-5-5-|
G|-5-5-5-5-5-5-|
and F minors under:
B|-6-6-5-6-6-6-|
G|-5-5-5-5-5-5-|
G|-5-5-5-5-5-5-|
---&---
As I mentioned above, in my previous recordings, I'd missed the guitar phrase in the transitions from C major to A minor. I'd like to point out that in one transition from a C major to an A major in "I Don't Want to Know," Paul Atkinson plays this same phrase (albeit an octave lower).