The Black Sabbath bassist has offered his first comments on the band's newly announced one-off reunion performance.

Osbourne is set to reunite with original bandmates Tony Iommi, Geezer Butler and Bill Ward for a farewell concert in July.

Singer Ozzy Osbourne, guitarist Tony Iommi, bassist Geezer Butler, and drummer Bill Ward. At first, they called themselves the Polka Tulk Blues Band. They changed their name a couple of times, first to Earth and then to Black Sabbath.