Formes fixes

The most common fixed forms consisted of two sections, or parts, which can be labeled A and B (for text that repeats) or a and b (for text that does not repeat). A and a share identical music, as do B and b.
French

ballade or balade: aab aab aab or aaB ccB ddB


rondeau: ABaAabAB


virelai: AbbaA [bbaA bbaA bbaA]


bergerette (single-stanza virelai): AbbaA



Italian

madrigal: aab or aabb


caccia: aab


ballata: AbbaA