The incorporation of growling and screaming into metal music is widely attributed to the heavy metal and thrash metal genres, which emerged in the late 1970s and early 1980s. While its origins are somewhat debated, it is generally believed that the first instance of such vocal stylings can be traced back to the work of the American heavy metal band Black Sabbath.
Black Sabbath is often credited with inventing heavy metal through their innovative use of dark, blues-inspired riffs and ominous lyrics. Lead singer Ozzy Osbourne’s distinctive voice, which was characterized by its raw and powerful delivery,
