Translation: Boulez Pierre (Born in 1925) FRANCE. Boulez - Piano Sonata No.2 (1947-48).
Translation: Boulez, Pierre. piano sonata no 3 - formant 2 (bad quality).
Translation: Boulez, Pierre. Pierre Boulez - Sonata No. 2-1-24.
Translation: Boulez, Pierre. Pierre Boulez - Sonata No. 2-25-48.