- Paul Oliver
A secular, predominantly black American folk music of the 20th century, which has a history and evolution separate from, but sometimes related to, that of jazz. From obscure and largely undocumented rural American origins, it became the most extensively recorded of all traditional music types. It has been subject to social changes that have affected its character. Since the early 1960s blues has been the most important single influence on the development of Western popular music (...