The pieces of solo piano by Chopin include 61 mazurkas, 16 polonaises, 26 preludes, 27 studies, 21 nocturnes, 20 waltzes, 3 sonatas, 3 ballads, 4 scherzos, 4 impromptus, a number of different songs for example the Barcarolle, Opus 60 (1846), the Fantasía, Opus 49 (1841), and the Berceuse, opus 57 (1845) and 17 songs from the Poles.