Because the man that was passionate about creating quality musical performance ensembles for young people, just like a Russian composer born in 1904, he founded what?
Dmitry Kabalevsky Dmitry Borisovich Kabalevsky (Russian: Дми́трий Бори́сович Кабале́вский ; 30 December [O.S. 17 December] 1904 14 February 1987) was a Russian composer.
Gustav Mahler Gustav Mahler (] ; 7 July 1860, Kaliště, Bohemia, now Czech Republic – 18 May 1911, Vienna, Austria-Hungary) was an Austrian late-Romantic composer, and one of the leading conductors of his generation. As a composer he acted as a bridge between the 19th century Austro-German tradition and the modernism of the early 20th century. While in his lifetime his status as a conductor was established beyond question, his own music gained wide popularity only after periods of relative neglect which included a ban on its performance in much of Europe during the Nazi era. After 1945 his compositions were rediscovered and championed by a new generation of listeners; Mahler then became one of the most frequently performed and recorded of all composers, a position he has sustained into the 21st century.