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
La Scala backlash caused serious disruptions and staff strikes. In a statement, the theatre's board said it was "urgent to unify the theatre's management." On 16 March 2005, the La Scala orchestra and other staff overwhelmingly approved a no-confidence motion against Muti, and demanded the resignation of Fontana's replacement, Mauro Meli. Muti had already been forced to cancel a concert a few days earlier because of the disagreements. Italy's culture minister, Giuliano Urbani, supported the conductor but called for urgent action by management to safeguard the smooth operation and prestige of La Scala. On 2 April 2005, Muti resigned from La Scala,