Characteristics
Experimental metal has been called "unclassifiable" and the most difficult heavy metal genre to define and describe. However, it is characterized by the use of innovative, avant-garde elements, large-scale experimentation, and the use of non-standard and unconventional sounds, instruments, song structures, playing styles, and vocal techniques. The term "experimental metal" is also often used as a term for the separate genre of "atmospheric metal" or "post-metal", which was named in reference to post-rock. Experimental metal is related to progressive metal, but experimental metal often has more experimentation, while progressive metal usually has a tighter focus on traditional metal instrumentation and higher levels of technical complexity. Experimental metal also uses unusual sounds, breaks conventions, and often includes new elements. The lyrics and visual presentation of the genre are eclectic as well.
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