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."
Loreley (opera) House on 12 July 1907. The first American performance was presented by the Chicago Opera Association at the Auditorium Building in Chicago on 17 January 1919 with Anna Fitziu in the title role. Performances both in Italy and internationally continued well into the 20th century but became increasingly sporadic. It was revived in 1955 for performances at the Baths of Caracalla in Rome, the Teatro Comunale in Reggio Emilia, and the Teatro Grande in Brescia; in 1968 at La Scala; and in 1983 at the Teatro del Giglio in Lucca, Catalani's native city. By the 21st century, "Loreley" had been