With the exception of instrumental tracks, there are a total of 20 songs from Sabbath's albums with Osbourne that never made the cut live, according to Setlist.fm. Therefore, there may have been a time where a song was played for a specific event that wasn't a concert.

With a pioneering sound that essentially created the genre of heavy metal, it’s no overstatement to call Black Sabbath one of the most important rock bands of all time. In 1967, bassist and lyricist Geezer Butler formed Rare Breed,

Singer Ozzy Osbourne, guitarist Tony Iommi, bassist Geezer Butler, and drummer Bill Ward. At first, they called themselves the Polka Tulk Blues Band. They changed their name a couple of times, first to Earth and then to Black Sabbath.