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 on 25 May 1874 and he announced in 1886 that La Scala would host the premiere of what was to become his penultimate opera, "Otello". The premiere of his last opera, "Falstaff" was also given in the theatre. In 1982, the Filarmonica della Scala was established, drawing its members from the larger pool of musicians that comprise the Orchestra della Scala. The theatre underwent a major renovation from early 2002 to late 2004. The theatre closed following the traditional 7 December 2001 season opening performances of "Otello", which ran through December. From 19 January 2002 to November 2004, the opera