You hate Classic Hard Rock? No Led Zeppelin, Ozzy Osbourne, Black Sabbath, or Dio then? ;_; Stoner Metal combines Blues Rock, Doom Metal, and Psychedelic Rock into one production, generally personified by a slow tempo, bass heavy sound, and melodic vocals. Sludge Metal is probably the heaviest you'll ever hear me listen too; it combines Doom Metal and Hardcore Punk with shouted vocals, tempos that contrast, and extremely distorted instruments.