Béla Viktor János Bartók (; Hungarian: [ˈbɒrtoːk ˈbeːlɒ]; 25 March 1881 – 26 September 1945) was a Hungarian composer, pianist and ethnomusicologist. He is considered one of the most important composers of the 20th century; he and Franz Liszt are regarded as Hungary's greatest composers. Among his notable works are the opera Bluebeard's Castle, the ballet The Miraculous Mandarin, Music for Strings, Percussion and Celesta, the Concerto for Orchestra and six string quartets.
https://en.wikipedia.org/wiki/B%C3%A9la_Bart%C3%B3k