A secret?

There is something in my life which I've never told anyone, except for two health professionals recently and my best friend yesterday. Now that I have my diagnosis, I needn't be afraid of telling you. What I am about to describe is not unusual for people with my type of autism.
I have already told you that I feel sounds, and the sensation is sometimes pleasant but generally otherwise, according to the sound in question. What I haven't told you until now is that when I listen to music,I see it. I don't see it like I can see the keyboard in front of me, but imagine this:
In my mind's eye I see something like a continuous roll of paper. As the music plays, so it unrolls. I see the melody as a continuous, undulating line towards the top of the roll. There is a similar line towards the bottom of the roll for the bass. The area bounded by these lines is shaded in, and I can mentally see the harmonies. As the music continues, so the roll continues to open. Listening to music demands my full attention. I can neither do anything or think of anything else while I'm listening. I have learned since that this experience is called Synesthesia.

Just now

While I was outside having a nice fag in the cold, damp weather, I thought again of Munch's painting The Scream. It was the bands of colour that got me thinking. They are like the pulses of physical energy that so affect me when a sound is unpleasant; the pounding on the arms and chest, the scraping, the near-hysteria. And the colours are just as aggressive as the sensations.

A musical interlude

https://www.youtube.com/watch?v=dT-gMgb2hqI

I've just referred to La Morangis ou La Plissay by Forqueray. I wasn't thinking straight just now. I'd like you to hear it, so have attached a link. I don't like most music, but what I do like I know and understand in great detail. This sort of music really makes me tick. I can feel it in my upper arms and face when I play it.