BBC News, West Midlands
Black Sabbath guitarist Tony Iomi has stated that performing a farewell gig within the band's residence metropolis will probably be fully completely different from what we have now executed “.
Performance at Villa Park in Birmingham on Saturday will be the first time that the original line -up – Ozi Osbourne, Tony Iom, Gyger Butler and Bill Ward – play together in 20 years.
IOMMI told the BBC, “We are all actually nervous”, but he said that the preparation had gone well.
“People are coming from all around the world and I can't take in it,” he stated.
More than 40,000 fans are expected to attend the event, which will also show performance of acts including Metalica, Sledra, Panera, Halstorm and Anthrax.
Ozi Osborne is expected to sing four songs only because of health issues and Iomi explained that the rehearsal was difficult on all classic lineups of Sabbath.
“I gained't say that it’s straightforward, it’s tough, as a result of none of us is getting small and drained to face there for a number of hours,” he said.
IOMMI stated that it was good to work with the supporting band, and “there was no ego”.

Although they have been a long route from their early days in Birmingham, Sabbath – formed in 1968 – still recalls the city and talks about their memories.
Iomi said: “I don't keep in mind what occurred yesterday, however we are able to keep in mind what occurred within the days the place we used to go, and the gigs we did.”
He made farewell to Birmingham additional poignant, said, “This is totally completely different from something we do, you already know that we have now performed for 300,000 folks, however it’s nervous-veraging.”
It was also thought that there would be no other return after this.
“We are usually not going to do that once more, it will be,” he confirmed.
He said that he hoped that the giggling will eliminate things on a good note and, when he was asked what he felt that the legacy of Black Sabbath would be, he said that it would be bands that follow their footsteps.
He stated that his legacy will proceed by means of him.
With inputs from BBC