I love the s4 score because it is beautiful and basically confirms M-Theory in the best possible way.
I’m talking about that one scene where John flirts with “E” on the bus in TST. Now, the melody that is playing (TST score; chapter “59 Missed Calls”; 0:46) is interesting because you get a version of MORIARTY’S THEME out of this.
Moriarty‘s theme: d# f# f g# .
The (let’s call it) “E”-theme: a# g f g# .
If you transpose it becomes: g# f d# f# .
Let’s put these notes together: d# f# f g# (g#) f d# f# .
As you can see, it looks like the melody is being “continued” by the “E”-theme.
So, the melodies aren’t the same but they share the same “content”.
That shows us A LOT. Let’s get from the score to the actual scene..
“E“ is a Mary mirror (I wrote a meta about that here), even though “E” is later to be revealed as Eurus, a Moriarty mirror.
(It you have no idea why I think that, here is a picture that might help:)
“E” has got the Moriarty theme but not, since it is a different version.
So, “E” is not exactly Moriarty but still has the same “content”, the same intentions as our mad villain.