Fr?d?ric Chopin did not attempt to preserve definitive versions of his compositions because he disliked the labor of writing down notes. Improvising his performances at will, he never played a piece the same way twice. As a result, there are numerous texts of any single Chopin work and the editions of these texts have more editorial "improvisation" than do the texts of most composers. One of the most respected editions was prepared by Carl Mikuli,...