Opera house electronic libretto systems have begun to be used in some opera houses, including New York's Metropolitan Opera, Milan's La Scala, and the Crosby Theatre of The Santa Fe Opera, which provide two lines of text on individual screens attached to the backs of the seats so as to not interfere with the visual aspects of the performance. A subtle type of sound reinforcement called acoustic enhancement is used in some opera houses. Acoustic enhancement systems help give a more even sound in the hall and prevent "dead spots" in the audience seating area by "...augment[ing] a hall's intrinsic acoustic characteristics."
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,