Free Nocturne No. 20 In C-Sharp Minor, Op. Posth. ringtone for your phone. Listen first, then download the version you like. Artist: Frédéric Chopin featuring Steve Anderson. There are 10 versions, from 12 to 46 seconds long. Tags: piano and slow. Click a tag below to see more ringtones like this. Android users need the .MP3 file, iPhone users need the .M4R file. Both are free. More ringtones by Frédéric Chopin are on the artist page, the link is under the title.