
This is Waltz Op. posthumous No. 19 in A minor, composed by Frederic Chopin. I performed this after two years of learning playing piano (from the scratch). This piece was used as a theme in the Chopin - Desire for Love movie: http://www.youtube.com/watch?v=eN-E6zenYkI There is even a song based on this waltz performed by Edyta Geppert, named 'Na krakowskim, czy w Nohant'. So, if you are not a big fan of classical music, but have got an impression you have heard this song before (and wondering where), this may be the answer. You can download the piano scores from here: http://icking-music-archive.org/scores/chopin/walzamin.pdf