found:Giffin, B. The Australian metal guide, c2002.
found:All music guide WWW site, Feb. 3, 2003(heavy metal; in body of article: heavy metal, metal)
General Notes
This heading is assigned to heavy metal music for two or more performers.
Editorial Notes
headings for music of individual instruments followed by the qualifier "(Heavy metal)", e.g. [Electric guitar music (Heavy metal),] and the subdivisions [Methods (Heavy metal)] and [Studies and exercises (Heavy metal)] under individual musical instruments and families of instruments