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
Lohengrin (opera) of the vocal score with his impressions and opinions of Wagner (this was almost certainly his first exposure to Wagner's music). La Scala produced the opera for the first time on 30 March 1873, with Campanini as Lohengrin, Gabrielle Krauss as Elsa, Philippine von Edelsberg as Ortrud, Victor Maurel as Friedrich, and Gian Pietro Milesi as Heinrich. The United Kingdom premiere of "Lohengrin" took place at the Royal Opera House, Covent Garden, on 8 May 1875 using the Italian translation by Marchesi. Auguste Vianesi conducted the performance, which featured Ernesto Nicolini as Lohengrin, Emma Albani as Elsa, Anna D'Angeri as