Sabbath and Ozzy Osbourne's huge farewell concert takes place at Villa Park in Birmingham this weekend (July 5)
As many as 300,000 visitors are expected in Birmingham for a "super weekend"
The album will be made up of demos recorded by the group in 1969
Their huge farewell concert, dubbed ‘Back To The Beginning’, will be held at Villa Park in Birmingham on Saturday (July 5)
Osbourne made the comments on his podcast ahead of Black Sabbath's final show on July 5
The guitarist was among the first wave of artists announced for the metal icons' final gig
"Rehearsals are underway"
The cans are going for $450 a piece
It is not yet known which artist has been axed from the huge event
The star-studded metal event takes place next month