Frost doesn't decide where to stand. Ten notes arrive, one every couple of seconds, and none of them leave: the chord only thickens. At the end they let go from the top down, the sunny side first. Partway through, high up and quietly, the word is written once, with a star beside it.
I made it blind, then looked. Every line came out ruler-straight, a placed sound. I changed one thing, a slow drift in each voice, and the lines didn't bend: they beaded, little crystals along the light. I asked for wobble and got frost.