Mezue ahịrịokwu na-esonụ: Mgbe 1936 gasịrị, n'ihi ihe ndị metụtara ego, ọ gbalịrị iji egwu tonal mee ka ọ dịghachi mma. Ọ wepụrụ arụmọrụ nke "Abụọ Abụọ maka Clarinet na Piano" (1931) na 1937 na World Music Days nke International Society for New Music (IGNM). Otú ọ dị, o nwere "Mkpịsị Egwú Atọ Maka Ndị Egwú E Ji Erere Eme Ihe" (c. 1936/37) gbara na ihe omume nke "Permanent Council for the International Cooperation of Composers", nke ndị National Socialist na-achịkwa na IGNM, na Winterthur. N'afọ 1940, "plot ballet" ya "Andreasnacht" ka emere na Essen n'okpuru Winfried Zillig - ọ bụ ezie na egwu, dị ka Zillig si kwuo, "dị ka jazz", ihe ngosi ahụ bụ ihe ịga nke ọma. N'afọ 1941, a kpọrọ ya ka ọ banye Wehrmacht ka ọ na-eche ndị mkpọrọ agha Britain nche ma kpọga ya Poznań. N'ebe ahụ, o dere "Kinderstücke" maka piano na serenade (efu). N'oge na-adịghị anya tupu agha ahụ agwụ na 1945, bọmbụ ndị Soviet gburu ya n'oge agha ahụ.
Agha nke Poznań. Ọ dị afọ iri anọ na atọ mgbe ahụ.