see more

British musicians Ozzy Osbourne (left) and Tony Iommi perform with Black Sabbath on stage at John F. Kennedy Stadium for the Live Aid Concert, Philadelphia, Pennsylvania, July 13, 1985. (Photo by Paul Natkin/Getty Images)

British musicians Ozzy Osbourne (left) and Tony Iommi perform with Black Sabbath on stage at John F. Kennedy Stadium for the Live Aid Concert, Philadelphia, Pennsylvania, July 13, 1985. (Photo by Paul Natkin/Getty Images)

see more

Ozzy Osbourne and Tony Iommi of Black Sabbath performs at Live Aid at Veteren's Stadium in Philadelphia, Pennsylvania, July 13, 1985. (Photo by Paul Natkin/Getty Images)

Ozzy Osbourne and Tony Iommi of Black Sabbath performs at Live Aid at Veteren's Stadium in Philadelphia, Pennsylvania, July 13, 1985. (Photo by Paul Natkin/Getty Images)

see more

(MANDATORY CREDIT Ebet Roberts/Getty Images) UNITED STATES - JULY 13: JFK STADIUM Photo of BLACK SABBATH and Ozzy OSBOURNE and Tony IOMMI and LIVE AID, Ozzy Osbourne and Tony Iommi performing live onstage at Live Aid (Photo by Ebet Roberts/Redferns)

(MANDATORY CREDIT Ebet Roberts/Getty Images) UNITED STATES - JULY 13:  JFK STADIUM  Photo of BLACK SABBATH and Ozzy OSBOURNE and Tony IOMMI and LIVE AID, Ozzy Osbourne and Tony Iommi performing live onstage at Live Aid  (Photo by Ebet Roberts/Redferns)