Nocturne in E-flat, Op. 9 No. 2

Chopin's most famous nocturne. The melody returns three times, more decorated each time; play the ornaments as part of the singing line, without rushing them, over a smooth left hand of bass notes and chords.

Source: Mutopia Project no. 1590, typeset by Renato Biolcati Rinaldi (CC BY-SA 3.0).