Experimental rock

Experimental rock (originally known as avant-garde rock or avant-rock) is a subgenre of rock music that emerged in the 1960s. The genre emphasizes innovation over commercial appeal, incorporating influences and ideas lifted from avant-garde music through traditional rock music instrumentation. It is primarily characterized by its use of unconventional song structures, musical techniques, rhythms and lyricism, usually deemed challenging, difficult, inaccessible or underground.