Ozzy Osbourne is performing his farewell show with the band’s original lineup, backed by bands including Metallica, Slayer and Lamb of God

Fans of Black Sabbath on Tuesday snapped up the first tickets for the UK heavy-rock giants' one-off hometown gig, where the original line-up will perform for the first time in 20 years and frontman Ozzy Osbourne's will bow out.

One of the most legendary heavy metal bands of all time is reuniting.

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Fans scramble to get tickets for ‘once-in-a-lifetime’ Black Sabbath gig - Ticketmaster said ‘there were no issues’ on its website.

The original line-up of heavy metal legends Black Sabbath, including Ozzy Osbourne, will play together for the first time in 20 years at a one-off concert on July 5 in Birmingham, England, organisers said on Wednesday.

Scheduled for July 5 at Villa Park, the show will feature Osbourne playing a short solo set, followed by him joining Sabbath for what's described as his "final bow." There will also be performances by Metallica, Slayer, Pantera, Gojira, Halestorm, Alice in Chains, Lamb of God, Anthrax and Mastodon.

Find out everything you need to know about Black Sabbath tickets, from ticket prices and support acts to where to buy them.

Ozzy Osbourne felt "overwhelmed" by the response from his friends in the music industry who have all offered to come together to join his huge Black Sabbath reunion gig in the summer.