Both aesthetically - and occasionally musically - the show cribbed from the heavy metal heyday of the 1980s. So it was only right that Gaga honored one of the genre's founders, Ozzy Osbourne, who died earlier that day.

Lady Gaga performed in San Francisco, honoring Ozzy Osbourne with a T-shirt tribute and a high-energy concert.

Lady Gaga and Coldplay were among the artists who paid their respects to Ozzy Osbourne onstage hours after his death July 22 at age 76.