Lady Gaga rocked an Ozzy Osbourne T-shirt and danced to 'Crazy Train,' while Coldplay and Dave Matthews covered 'Changes' to honor the metal legend.

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

Thousands of miles away, Coldplay took the Nashville stage that same night and honored Ozzy in their own way. Chris Martin sat at the piano, said just one line “Ozzy, we love you” and played a stripped-down version of “Changes.” The crowd lit up their phones. Not a sound other than the music. It wasn’t a concert anymore. It felt like a goodbye.

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Hours after Osbourne's death, Idol spoke with The Hollywood Reporter about Osbourne's musical legacy, and the path he carved for the musicians who came after him.

Two weeks before his death on Tuesday, Osbourne took part in Black Sabbath’s farewell show on July 5. He performed his final show with his bandmates — Geezer Butler, Tony Iommi and Bill Ward — at the Villa Park Stadium in Birmingham, England, where the band was formed in the late ’60s.