(PWM). The Rondo in C Major for two pianos was composed in 1828. The
Variations in D Major on an Irish National Air from Thomas Moore was
composed in 1826. The National Edition of the Works of Fryderyk Chopin
Published by PWM Exclusively Distributed by Hal Leonard Corporation
Co-Editors Jan Ekier and Pawel Kaminski The objective of the National
Edition is to present Chopin's complete output in its authentic form,
based on the entire body of available sources. Sources were analyzed
with up-to-date scientific and musicological methodology. The National
Edition was based on sources originated from the composer, mainly
autographs, copies of autographs and first editions with the composer's
corrections, and pupils' copies with Chopin's annotations. In cases when
original sources were lacking, the closest possible materials were used.
Collecting the source materials was a laborious task which took years of
effort. The characteristics of sources, the links and discrepancies
between them as well as the reasons for particular editorial decisions
are discussed in the Source Commentary in each volume. The Performance
Commentary appended to each volume includes: the realization of
ornaments, comments on pedal markings (the original markings sometimes
are inadequate, due to the difference in sound between pianos used in
Chopin`s times and modern pianos), suggestions as to the "harmonic
legato" (a performance technique often used by Chopin and now
forgotten). About the National Edition Full Introduction to the Polish
National Edition of the Works of Fryderyk Chopin
