Béla Bartók was a Hungarian composer and ethnomusicologist, born on March 25, 1881. He is known for his significant contributions to 20th-century music, blending folk elements with classical forms. Bartók's works often feature complex rhythms and innovative harmonies, making him a key figure in modern music. In addition to composing, Bartók collected and studied folk music from various cultures, particularly in Eastern Europe. His research helped preserve traditional music and influenced his own compositions. Some of his most famous works include the Concerto for Orchestra and Music for Strings, Percussion, and Celesta.