I'm like this, but when I have too much caffeine I notice that it's harder to turn the monologue off. It becomes a little shouty in fact. Brains are weird.
Brains are so weird! When I get deep into thought sometimes my internal monologue doesn't turn off but it sort of spinlocks by repeating bits of songs that are tangentially related to whatever it is that I'm thinking of abstractly. I have a sense in general that there are two parts of my brain that are semi-independent.
I play time-attack puzzle games; and some of my best times have been while I'm listening to an audiobook, music or deep in thought about some emotional problem. It feels like I actually perform both tasks better if I'm doing them simultaneously because my "vague processing" isn't interrupted by my "sharp processing" and vice versa.
When I have too much caffeine I've noticed that I have very strong ability to recall auditory information, specifically tunes. I get a sort of perfect-pitch effect where I can consistently recall music in the proper key and replay it in my mind. It also happens late at night.
How do you remember music? Can you try to describe how you recall it?
I have this problem with music/sound specifically. I cannot remember it at all. For example, I have favourite artist that I heard all of his albums 50+ times. If you play a random track of his to me I won't be able to identify it. Another example; My favourite all time soundtrack that I heard countless times, I cannot recall how it goes. If somebody asks me to "sing" the melody I will fail miserably. Oh and I don't know lyrics of any song. Any. I tried to learn though...
I still get tired of listening to the same tracks over and over again :( .