Rage Against The Machine rocker Tom Morello has teased that some "huge superstars" could make a surprise appearance at the last ever Black Sabbath concert.
The 60-year-old guitarist is the musical director of the 'Back to the Beginning’ show which will take place at Villa Park - the stadium of Premier League football club Aston Villa - in Birmingham, England, on July 5 and it will be the final time Black Sabbath’s original line-up, Tony Iommi, Geezer Butler, Bill Ward and Ozzy Osbourne, will perform together.