You know how their faces contort when hitting certain notes or rhythms? Why is that triggered in the face? Is it an emotional response? Communication by facial expression? Vestigial from some other process?
You know how their faces contort when hitting certain notes or rhythms? Why is that triggered in the face? Is it an emotional response? Communication by facial expression? Vestigial from some other process?
I’ve just viewed it as clenching one of the only parts of your body that won’t impact your actual play. Humans often hold their breath and clinch when they are focusing on something