Everything what is called Doom- or Stoner-Metal today probably started here. Guitarist Tommi Iommi detunes his guitar to make it easier to play. Three semitones lower he finds a "and forces bassist Geezer Butler to do the same. The result has an effect on Generations of musicians - whether Nirvana, Soundgarden or Smashing Pumpkins - they all refer to this milestone. Ozzy Osbourne pretends to have "nothing to do with anything" because of the many fog wafts in the studio but at the same time he also notes that "Children Of The Grave" is probably the best "kick-ass" song in the world Song you've ever composed". The audience thanks them with double platinum.