Quiver mutations are algebraic operations on certain types of directed-edge vertex graphs. One may take melodic lines (typically from works employing species counterpoint) and condense them into 'quivers', whereupon they may be mutated. This is such an experiment on the beginning of a 1640's Pavane by C T Padbrué. See
https://mi.doh.so/2020/10/quivering-recreations.html
for the maths!
