György Ligeti (1923–2006) was a Hungarian-American composer renowned for his innovative contributions to contemporary classical music. His work spans various genres, primarily focusing on orchestral and chamber music, but he also composed operas and choral music. Ligeti is best known for his use of complex textures and unique soundscapes, often incorporating microtonality and unconventional rhythms. Notable works include the orchestral pieces "Atmosphères" (1961), which gained fame for its use in Stanley Kubrick's film "2001: A Space Odyssey," and "Lux Aeterna" (1966), a choral work that showcases his interest in spatialization and vocal techniques. His opera "Le Grand Macabre" (1978) is another significant piece that blends absurdism with profound themes. Ligeti's impact on music is profound, influencing generations of composers with his exploration of sound and form. He challenged traditional notions of melody and harmony, paving the way for new approaches in both avant-garde and popular music contexts. His legacy continues through the ongoing study and performance of his works, which remain vital in the repertoire of contemporary classical music.