Modern popular dance music initially emerged from late 19th century's Western ballroom and social dance music. During the early 20th century, ballroom dancing gained popularity among the working class who attended public dance halls. Dance music became enormously popular during the 1920s. In the 1930s, called the Swing era, Swing music was the popular dance music in America. In the 1950s, rock and roll became the popular dance music. The late 1960s saw the rise of soul and R&B music. Dominican and Cuban New Yorkers created the popular salsa dance in the late 1960s which stemmed from the Latin music genre of salsa. The rise of disco in the early 1970s led to dance music becoming popular with the public. By the late 1970s, electronic dance music was developing. This music, made using electronics, is a style of popular music commonly played in nightclubs, radio stations, shows and raves. Many subgenres of electronic dance music have evolved.