What Polish composer and pianist wrote op. 34?
Masques (Szymanowski): The Masques op. 34 is a work for piano written by Karol Szymanowski from 1915 to 1916. Karol Szymanowski: Karol Maciej Szymanowski (] ; 6 October 188229 March 1937) was a Polish composer and pianist, the most celebrated Polish composer of the early 20th century.
Karol Szymanowski