Thanks for the idea, though!
My inner ear is nothing compared to a good composer's, but it's waaaaay better than my mind's eye, I think mostly due to years of heavy musical practice routines.
There was one memorable occasion when I was able to page through a set of flute/clarinet duets and actually hear in my head how they sounded based on sightreading the scores mentally.
I was playing a lot back then and doubt I could do it now. Two monophonic instruments also helped - I can recall individual voices or instruments fairly well, but whole arrangements much at all.
