Popular music originated between 1800 and 1950 and appeals to mainstream audiences. It includes a wide range of genres from vaudeville to heavy metal. One consistent element is the pop song structure of verse and chorus.
Popular music genres discussed include ballads, standards, rock and roll, alternative music, and disco. Ballads have a slow tempo and romantic emotion. Standards originated from Broadway and Hollywood in the 1910s. Rock and roll combines genres like blues and country. Alternative music emerged from punk rock and has influences from various genres. Disco has a prominent bass line and is dance-oriented.