+Underground music refers to any sound existing outside the commercial [Mainstream](/wiki/mainstream). It often prioritizes artistic expression over profit, fostering distinct [Music Subculture](/wiki/music_subculture) communities and innovative genres.
+## See also
+- [Independent Music](/wiki/independent_music)
+- [DIY Ethic](/wiki/diy_ethic)
+- [Alternative Music](/wiki/alternative_music)
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