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.

The original Black Sabbath lineup, featuring Ozzy Osbourne, Tony Iommi, Geezer Butler and Bill Ward, will perform at the “Back to the Beginning” concert on July 5 in Birmingham, England.

The all-day event will also feature a host of major metal bands including Metallica, Slayer and Alice In Chains, with more names to be announced shortly.