Who died in September 1945

Hungarian composer, pianist, and ethnomusicologist who integrated folk music with avant-garde styles, becoming one of the 20th century's most important classical figures

German physicist, inventor of the Geiger counter, and co-discoverer of the atomic nucleus

Austrian composer and conductor, a leading figure of the Second Viennese School, known for his modernist atonal and twelve-tone music

Russian poet, playwright, and religious thinker who defied conventions and became a central figure in Russian symbolism.