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."
Rudy La Scala Alonso, Guillermo Dávila, Kiara, Ruddy Rodríguez, Proyecto M, Carlos Mata, Las Payasitas Nifu Nifa and Gerardo Mora. As a performer, La Scala reached the top of the "Billboard" Top Latin Songs chart twice with "El Cariño Es Como Una Flor" and "Por Qué Será" in the 1990s. He is the only record producer with 12 platinum and nine gold certified albums in Venezuela. He also performed the theme song of the Venezuelan soap opera "Cristal" among others. At age 15, La Scala formed a rock band named Las Explosiones de Goma. In 1971, he debuted as a solo artist, and