Ozzy Osbourne is back on stage.

The legendary musician, 73, had a surprise performance at the 2022 Birmingham Commonwealth Games in England on Monday night. This marked his first live performance since his "life-altering" surgery in June.

The "Crazy Train" singer put on a show alongside his former band member, Tony Iommi. 

Videos online show the stars performing "Paranoid," the hit song from their time in Black Sabbath.

Ozzy Osbourne performing

Ozzy Osbourne performed for the first time since his "life-altering" surgery in London on Monday night. (Alex Livesey)

Following the performance, Osbourne’s son Jack took to Instagram to share images of his father on stage. "Dad and @tonyiommi closed out the #commonwealthgames2022 tonight," he captioned the post.

OZZY OSBOURNE, 73, ‘FEELING GOOD’ AS HE LEAVES HOSPITAL IN A WHEELCHAIR WITH WIFE SHARON AFTER ‘MAJOR’ SURGERY

Osbourne took to Twitter Tuesday to share a few images from his closing ceremony performance. "Closing the #CommonwealthGames #Birmingham Forever!"

In June, Osbourne’s wife, Sharon shared during an appearance on her U.K. chat show "Talk TV" that her husband would undergo a "major surgery." 

OZZY OSBOURNE HOME FROM HOSPITAL AND 'RECUPERATING COMFORTABLY,' THANKS FANS FOR 'PRAYERS' POST SURGERY

"He has a major operation on Monday, and I have to be there," she told her fellow TalkTV panelists. "It’s really going to determine the rest of his life." 

Ozzy Osbourne Black Sabbath

Osbourne and Tony Iommi wowed the crowd with their performance of "Paranoid" on Monday night. (Eddie Keogh)

Osbourne has battled neck problems for nearly two decades following a quad biking accident, but the nature of the specific medical procedure he needed remains unclear.

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A report surfaced stating that the procedure was to remove and realign pins in his neck and back. "Ozzy is 73 and any kind of surgery when you get older is difficult," a source told Page Six. "This is quite major. He’s having the pins in his neck and back realigned from when he had a fall back in 2019."

Shortly after the surgery, Osbourne took to Twitter to share an update to his fans. 

Ozzy Osbourne first performance since surgery

Ozzy Osbourne of Black Sabbath performs during the Birmingham 2022 Commonwealth Games closing ceremony on Monday night. (Alex Pantling)

"I am now home from the hospital recuperating comfortably," he wrote. 

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"I am definitely feeling the love and support from all my fans and send everyone a big thank you for their thoughts, prayers and well wishes during my recovery."

Fox News' Tracy Wright contributed to this report.