Volume 8 is one of six volumes within the 'Genre' strand of the series. This volume discusses the genres of North America in relation to their cultural, historical and geographic origins; technical musical characteristics; instrumentation and use of voice; lyrics and language; typical features of performance and presentation; historical development and paths and modes of dissemination; influence of technology, the music industry and political and economic circumstances; changing stylistic features; notable and influential performers; and relationships to other genres and sub-genres. This volume features over 100 in-depth essays on genres ranging from Adult Contemporary to Alternative Rock, from Barbershop to Bebop, and from Disco to Emo.