Chanson (French for "song") refers to any song with French words, but more specifically classic, lyric-driven French songs, European songs in the cabaretstyle, or a diverse range of songs interpreted in this style. A singer specializing in chansons is known as a chansonnier.
In a more specialised usage, the word 'chanson' refers to a polyphonic French song of the late Middle Ages and Renaissance. Early chansons tended to be in one of the formes fixes, ballade, rondeau or virelai, though some composers later set popular poetry in a variety of forms.