I have spoken in length with many of my students over the years, about a sensory augmentation I know well, called Chromesthesia. I have known this “ability to hear music in color”, most of my life. I never knew that there was something unique about it. Just like having perfect pitch or relative pitch or associative pitch - I thought that everyone who played an instrument had these abilities. Turns out - I was wrong.
Color is when our eyes detect variations of reflective light as resonating frequencies.
If I play a common open-string “G” chord on my guitar, I hear it as a bright yellow. If I play a common open-string “C” chord on my guitar, it has a tropical or citrus color, usually in the form of a pale orange or mauve; depending on the strings and the guitar. I know, weird, huh?
What scientists originally thought was that we have electrical impulses that run throughout body. Turns out, they are frequencies. Well, at least that’s what makes sense to me - the following video explains it better than I can.
So, as it turns out, frequencies that I hear in music and everywhere esle, do have corresponding colors.
By the way, all A minor chords are dark red.