Folk revival (also known as roots revival) is a trend which includes the popularisation of previously non-mainstream folk music, adaptation of folk styles to pop or rock structures, introduction of new instruments and formats (eg. bands instead of solo acts), and composition of works by those who perform them, as opposed to folk tunes mostly passed down orally. Often, folk revivals also include an addition of newly-composed songs with socially and politically aware lyrics, as well as a general modernisation of the folk sound.
After the American folk music revival in the 1950s, a wave of roots revival swept the world in the 1960s and 1970s. In most cases, the folk music being revived were not quite extinct, though some have not been played for years or were moribund. This includes the Celtic music of Cornwall and the Isle of Man.
