American sept music, also known as roots music, is a broad category of penalization including Bluegrass, land music, gospel, old time music, jug bands, Appalachian folk, blues, Cajun and Native dweller music. The penalization is thoughtful dweller either because it is native to the United States or because it matured there, out of foreign origins, to such a degree that it struck musicologists as something distinctly new. It is thoughtful \"roots music\" because it served as the basis of penalization later matured in the United States, including rock and roll, rhythm and blues, and jazz.
The term sept penalization originated in the 19th century as a term for musical folklore. It has been defined in several ways; as penalization transmitted by word of mouth, penalization of the lower classes, penalization with no known composer. It has been contrasted with commercial and Hellenic styles.
Since the middle of the 20th century the term has also been used to describe a kind of popular penalization that is based on traditional music. Subgenres include sept rock, electric folk, sept metal and progressive sept music.