Regional music is a musical category encompassing many different styles of music from around the country, which includes many genres including some forms of Western music represented by folk music, as well as selected forms of ethnic music, traditional music, indigenous music, neotraditional music, and music where more than one cultural tradition, such as when ethnic music and Western popular music intermingle.
World music's inclusive nature and elasticity as a musical category may pose for some obstacles to a universal definition, but its ethic of interest in the culturally exotic is encapsulated in Roots magazine's description of the genre as "local music from out there".
The term was popularized in the 1980s as a marketing category for non-Western traditional music. Globalization has facilitated the expansion of world music's audiences and scope. It has grown to include hybrid subgenres such as world fusion, global fusion, ethnic fusion, and worldbeat. The term has been credited to ethnomusicologist Robert E. Brown, who coined it in the early 1960s at Wesleyan University in Connecticut, where he developed undergraduate through the doctoral programs in the discipline. To enhance the process of learning, he invited more than a dozen visiting performers from Africa and Asia and began a world music concert series. The term became current in the 1980s as a marketing/classificatory device in the media and the music industry. There are several conflicting definitions for world music. One is that it consists of "all the music in the world", though such a broad definition renders the term virtually meaningless.