Thanks for your example. This topic is very interesting. I want to give it a try although we can't describe our thoughts very accurately. Just FYI, I memo corners before edges, use M2/OP with speffz and the standard WCA scrambling orientation is my BLD orientation. My solving times are around 2:00 to 2:50 (I don't know how long I need for memo).
(lifts cover)
(turns cube randomly cause I suck at color scheme)
"where is the damn white"
(finds orientation)
"G - P - Gangplank, nice" (it's a character in League of Legends so I'm happy as I don't have images for every pair)
"D - S (visualizes the Nintendo DS but don't speak in my head) J - O, Johann" (that's a friend I know IRL)
"B (changes last images from JO=Johann to JOB=job), **** parity"
"Humm, isn't there a letter missing? Damn, a twisted corner, L (visualizes L sticker) clockwise"
(puts cube down, visualizing a scene where Gangplank plays on a DS as his occupation, while saying to myself "Gangplank - DS - job - clockwise")
(starting edges)
"I - T - Ö - X, itöx"
"P - B - F, oops I hit my buffer piece"
(looking at UB)
"A is free, p.bfa"
"S - Q, another cycle break >.< there must be more pieces cause I had parity"
(putting fingers on all stickers already memorized, finds BL - UL - LB, visualizes sticker positions of BL and UL and that it's a twisted 2-cycle without preparing the according speffz letters)
"itöx - p.bfa - s.k - itöx - p.bfa - s.k"
(puts blindfold down and starts to solve)
The dot indicates a vowel that is different to the ones already used in my letter scheme to connect two consonants to a syllable (something like the Russian "ы" in my case). For audio memo I generally use "Ö" (a German vowel) in "V"'s stead to avoid confusing it with "F" or "W", and "K" in "Q"'s stead as "K" corresponds to my buffer thus is not used.
That was interesting to see! I already suspected my memo is full of distracting thoughts and emotional curse noises, maybe I have to work on that.

Also you see that I don't just memo corners with images and edges with audio, but improvise depending on the situation: For example twisted corners visually and sometimes when I spend too much time on my audio edges I just skip recalling the letters for the last cycle if the cycle is short, like I did here.
Btw I DNFed the solve by a twisted corner on L. Not that surprising considering there was no twisted corner on L in the scramble (I already had all the corners in my memo, including letter G ._.). Not bad though, like that you were able to see how I would deal with twisted corners if there was one. xD