Rondo is a piece in which one principal subject is repeated several times (in a so called refrain), and is divided by various couplets. Chopin used this musical form with inherent ingenuity.
Rondo in C minor, Op. 1 (1825)
Rondo a la Mazur in F Major Op. 5
Rondo in E flat Major Op. 16
Rondo in C Major for 2 pianos Op. 73
Rondo in C Major Op. posth.