Mastodon

"It's not always perfect, it's not always amazing, but we were brothers to the end."

Hard rock and metal's biggest stars are performing Black Sabbath and Ozzy Osbourne covers all day and all night.

See Loudwire's picks for the best metal song of each year since 1970, alongside the runner-up choices!

Les Claypool, Danny Carey, Bill Kelliher, Coheed and Cambria's Claudio Sanchez team for quarantine rendition of 1975 track.

Check out the dates.