What nationality was the composer who wrote 'The First Piano Sonata in 1946'?
Piano sonatas (Boulez):  The First Piano Sonata in 1946, a Second Piano Sonata in 1948, and a Third Piano Sonata was composed in 1955–57 with further elaborations up to at least 1963, though only two of its movements (and a fragment of another) have been published. Pierre Boulez: Pierre Louis Joseph Boulez CBE (] ; 26 March 1925 – 5 January 2016) was a French composer, conductor, writer and organiser of institutions.
i don't know