前卫民谣Progressive Folk

前卫民谣最早是美国民谣歌曲在追求政治诉求时衍生出来的分支，但在英国变成不强调传统的民谣创作，更多的致力于新的文化创作，同时产生了新分支迷幻民谣，整体是受到前卫摇滚较大影响的。

Progressive folk or prog folk was originally a type of American folk music that pursued a progressive political agenda, but in the United Kingdom the term became attached to a sub-genre that rejects or de-emphasizes the conventions of traditional folk music and encourages stylistic or thematic innovation.

It gave rise to the genre of psychedelic or psych folk and had a major impact on the development of progressive rock.