Soundgarden have posted a tribute to Ozzy Osbourne and Black Sabbath that also explains their absence at the Back to the Beginning concert.

On July 5, Ozzy performed his final concert — titled “Back to the Beginning” — with his band Black Sabbath. It was the first time the singer had reunited with the group in 20 years.

The epic 'Back to the Beginning' send-off was held at Villa Park in Birmingham, England, and streamed live globally.