American classical music: is music written in the United States but in the European classical music tradition. In many cases, beginning in the 18th century, it has been influenced by American folk music styles; and from the 20th century to the present day it has often been influenced by folk, jazz, blues, Native American, and pop styles.
American folk music: is a musical term that encompasses numerous genres, many of which are known as traditional music, traditional folk music, contemporary folk music or roots music. The music is considered American either because it is native to the United States or because it developed there, out of foreign origins, to such a degree that it struck musicologists as something distinctly new. It is considered "roots music" because it served as the basis of music later developed in the United States, including roll, rhythm, and jazz.
Disco music: is a genre of dance music. Disco acts charted high during the mid-1970s, and the genre's popularity peaked during the late 1970s. Disco also was a reaction against both the domination of rock music and the stigmatization of dance music by the counter culture during this period. Disco was the last mass popular music movement that was driven by the baby boom generation. Disco music was a worldwide phenomenon, but its popularity declined in the United States in the late 1970s.
Hip hop music: also called rap music, is a music genre consisting of a stylized rhythmic music that commonly accompanies rapping, a rhythmic and rhyming speech that is chanted. It developed as part of hip hop culture.
American pop: term applied generally to whatever form of music is most popular among mainstream American teenage audiences. Adolescents are an especially important audience, both because of their relatively large amount of discretionary spending, and their fervent devotion to pop stars. Though the modern era of teen pop music is not usually said to have begun until the