Answer
Significant. Bartók's innovative use of folk music, complex rhythms, and harmonies profoundly influenced 20th-century music. His exploration of Eastern European folk melodies and rhythms expanded the tonal palette of Western music, while his intricate rhythmic structures and dissonant harmonies challenged traditional notions of tonality. Bartók's influence can be seen in the works of composers such as Stravinsky, Copland, and Messiaen.