Black Sabbath is the infamous band that is credited with creating the genre of heavy metal in the late 1960s' They were most known for their gothic themes, horror-inspired lyrics, and down-tuned guitars. The lead singer of the first couple of albums was Ozzy Osbourne, but after excessive substance abuse, he was replaced by Dio. They toured the world for over 45 years and are still a well-known and loved band today.