Fleurs de vertus : chansons subtiles à la fin du XIVè siècle

Ars subtilior is a late–14th‑century style of Franco‑Flemish and southern French/Iberian court music noted for its extreme rhythmic, notational, and contrapuntal sophistication. It refines the innovations of the Ars nova into music of dazzling subtlety: complex syncopations, multiple simultaneous meters, proportion signs, coloration (red/black notation) that alters rhythmic values, and isorhythmic devices. Composers often wrote in the French formes fixes (ballade, rondeau, virelai) and in elaborate motets, sometimes presenting pieces in fanciful shapes (hearts, circles) to mirror their poetic conceits. The sound world is courtly and intricate: interlocking lines in three or four parts, refined dissonance control, and virtuosic rhythms that challenge performers while serving refined, often allegorical texts.