The 20th century was a transformative period for music, marked by the emergence of diverse genres and styles. Innovations in technology, such as the radio and phonograph, allowed music to reach wider audiences. Genres like jazz, rock and roll, and hip hop gained popularity, each influencing culture and society in unique ways. Composers like Igor Stravinsky and Leonard Bernstein pushed the boundaries of classical music, incorporating new techniques and rhythms. The century also saw the rise of electronic music, which utilized synthesizers and computers, further expanding the possibilities of sound and composition.