As a friend of mine who happens to be a Shrink once told me; "It's ok if you have several different voices in your head, as long as you don't start giving them different names."
When I do things that involve body parts and tools, there is actually nothing going on in my mind...That's probably why there is also pain and blood involved.
When I'm reading the narrative is being verbalized in my head. According to my wife, if the house was burning down while I was reading, I wouldn't notice.
I also have had tinnitus for many years. That does override just about everything else, except when I read.