Assertion: underground music | /r/HasProperty | secret
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Source sentences:
text: Shlomo Sher's "philosophy for artists" argues that there are three common misconceptions about the "underground": that it refers exclusively to the rave/electronica scene; that it can be described with a vague, broad definition of "anything which is not mainstream"; and the myth that underground music is kept secret; he points out that no band or performer "exclud[es]