Opera house as they sing. This occurs in the Met's productions of operas such as "Aida" and "Tales of Hoffman". London's Royal Opera House, which was remodeled in the late 1990s, retained the original 1858 auditorium at its core, but added completely new backstage and wing spaces as well as an additional performance space and public areas. Much the same happened in the remodeling of Milan's La Scala opera house between 2002 and 2004. Although stage, lighting and other production aspects of opera houses often make use of the latest technology, traditional opera houses have not used sound reinforcement systems with microphones
Metropolitan Opera House (Philadelphia) Academy of Music for the 1920-1921 opera season, the MOH became the home of the Philadelphia Civic Opera Company until 1928. The Philadelphia Grand Opera Company and the Philadelphia La Scala Opera Company, two companies that primarily performed at the Academy of Music, also occasionally performed there during the 1920s and 1930s. The MOH was also host to many traveling productions by opera companies from other cities. The last opera production mounted at the MOH was a double billing of "Cavalleria rusticana" and "Pagliacci" under the baton of Aldo Franchetti, presented by the Chicago Grand Opera Company on May 5,