Oh my. I am starting to flood this thread, sorry about that, it’s just very exciting to see (for the lack of being able to hear) everyones ideas around this.
I am reminded of a performance I once saw where the performer didn’t move his body to the beat and didn’t smile or frown but merely played his music. He allowed space to exist for the music to occupy. It was a very moving experience. A performance in service of the music. Not entertainment in the general sense but a sonically-centered experience for the audience.
Thinking about it now, it was obviously a choice that the performer had to make. It could be read as a visual choice to not obscure the music. In the same way playing in the dark like Autechre is a strong visual element of their performance.
I think however one might look at it, sound doesn’t exist in a vacume and is essentially something we engage with through our bodies and not just our ears.
Maybe body > ears > eyes?