Rainbow with Ronnie James Dio would expand on the mystical and -based lyrics and themes sometimes found in heavy metal, pioneering both and.
During the 1980s, became popular with groups such as and.
American noise band Today is the Day used synthesizers on their 1996 self titled album to powerfully add to their din.
Doom metal Further information: Emerging in the mid-1980s with such bands as California's , Maryland's , Chicago's , and Sweden's , the doom metal movement rejected other metal styles' emphasis on speed, slowing its music to a crawl.