Underground music is an extremely broad term. It does not refer to any specific genre or era. The Wikipedia definition follows.
Underground music comprises musical genres beyond mainstream culture. Any song that is not being legally commercialized is considered underground. Such music may tend to express common ideals, such as high regard for sincerity and intimacy, freedom of creative expression as opposed to the highly formulaic composition of commercial music, and appreciation of artistic individuality as opposed to conformity to current mainstream trends. Apart from perhaps the underground rock scenes in the pre-Mikhail Gorbachev Soviet Union, very few types of underground music are completely hidden, however, performances and recordings may nevertheless be difficult for outsiders to find.
Above is some great underground Deep House music. Try it--you may like it!
DJ Rose has been given permission to promote her very underground novel, which was inspired by the tragic life of a figure from the Scandinavian metal underground scene. Please check it out! And spread the word, if you would be so kind.
~DJ Rose~
