Apparently, there is a very good explanation for their absence, according to singer Rob Halford: they’re double-booked.

Aerosmith's Steven Tyler is to make an appearance at Black Sabbath's 'Back To The Beginning' concert. The 'Sweet Emotion' rockers officially retired from touring last August after frontman Steven ...

Judas Priest's Rob Halford explains why the band won't be performing at the Ozzy-Black Sabbath Back to the Beginning farewell ...

Judas Priest singer Rob Halford has explained why they won't be performing at Black Sabbath's farewell concert despite Sharon ...

AEROSMITH were forced to retire early last year after frontman Steven Tyler suffered a serious vocal cord injury. The US ...

AEROSMITH were forced to retire early last year after frontman Steven Tyler suffered a serious ... a special guest at Ozzy Osbourne's final Black Sabbath showCredit: Getty But Steven has been ...

Black Sabbath's final show is two months away, and Geezer Butler's "already having palpitations." The bassist spoke about his ...

Rock legends Alice In Chains abruptly cancelled their show at the 11th hour due to a health scare involving drummer Sean ...

Rock legends Alice In Chains were forced to cancel a concert at the last minute due to a medical emergency involving drummer ...