Consonance Matrix

Which of the twelve notes fit what is sounding now — a playing aid, not an analysis. Each pitch class is shaded by how well it agrees with a blend of the held chord and the tonal field the piece has established, so a note belonging to both glows brightest. The same maths the reference hardware lights its strum-bar LEDs with, including the min-max normalisation that turns narrowly-clustered consonance scores into a ranking you can actually read.