Iommi said that it was clear the final concert had taken its toll on him, as Ozzy had texted him just a couple of days before his passing, telling him that he was tired and low on energy. Iommi said he could see the toll it took on him during rehearsal.

Heavy metal rocker Ozzy Osbourne died this week at 76, about five years after announcing he had Parkinson’s disease

Now, singer and founding member Ozzy Osbourne tells his story during the later years of his life in a new memoir. Priced at $30 on Amazon and set to be released on Oct. 7, Last Rites chronicles Osbourne's life and career leading up to a farewell tour,