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."
Santa Maria la Scala are a number of paintings from the school of Solimena. Next to the sacristy is an altarpiece depicting "St Matthew" by Antonio Pascucci. The canvases in the second and third chapels on the right, depicting Madonnas with "Saints Francis and John the Baptist", and with "Saints Anthony and Phillip" were painted by Nicola de Mattheis. The third chapel also has a canvas depicting the "Resurrection" by Paolillo, a pupil of Andrea di Salerno. The first chapel on the right has a St Anthony by the school of Massimo Stanzione. Santa Maria la Scala Santa Maria la Scala is a Baroque