Musicians from Lady Gaga to Coldplay to Swedish metal group Ghost have performed tributes to the iconic rocker and reality TV pioneer Ozzy Osbourne following his death — appropriate for a man who named his 1987 live album Tribute.

Kelly Osbourne is mourning the death of her dad and rock legend Ozzy. On Thursday, the musician and daughter of the Black Sabbath frontman returned to social media for the first time since his death to share a heartbreaking statement of grief. "I feel unhappy," she wrote. "I am so sad. I lost the best friend I ever had."

Sad to hear Ozzy died today,” Pearl Jam’s Mike McCready shared in a tribute on Instagram. “When I was in high school I discovered Sabbath. ‘War Pigs’ was terrifying and mesmerizing at the same time. It was Ozzy’s voice that took me away to a dark universe.