LONDON, UNITED KINGDOM - JULY 04: Ozzy Osbourne of Black Sabbath performs on stage at British Summer Time Festival at Hyde Park on July 4, 2014 in London, United Kingdom. (Photo by Christie Goodwin/Redferns via Getty Images)
LONDON, UNITED KINGDOM - JULY 04: Ozzy Osbourne of Black Sabbath performs on stage at British Summer Time Festival at Hyde Park on July 4, 2014 in London, United Kingdom. (Photo by Christie Goodwin/Redferns via Getty Images)