Ozzy Osbourne’s Black Sabbath first wailed on their guitars in public — has been designated an important historic building after 15,000 people signed a petition calling for the building and surrounds to be saved from redevelopment. Birmingham, England’s scruffy second city, may not get much attention from outside the country, but the brawling industrial burg changed rock music forever in the 1970s when the likes of Led Zeppelin, Judas Priest and Ozzy & Co.