Chester Music is the publisher of this work in all territories except Poland, Albania, Bulgaria, China, countries of the former Czechoslovakia, Cuba, North Korea, Vietnam, Romania, Hungary and the whole territory of the former USSR, where the copyright is held by Polskie Wydawnictwo Muzyczne (PWM).
In 1977, I was asked by the pianist Felicja Blumental for a composition and revised these Variations as a Concerto for Piano and Orchestra. It expands the piano-duo piece by repeating each section (apart from the theme itself and Variations 10 and 11) with the soloist and orchestra exchanging roles for the second playing of each Variation. Otherwise there is very little change in the musical substance. Blumental gave the first performance of the new version in Miami on 18 November 1979 with Brian Priestman conducting the Florida Philharmonic Orchestra.
© Witold Lutoslawski