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 under the name Flavio, released the song "Piensa, Sueña y Rie". Three years later, he changed his name to Rudy La Scala and presents the song "Woman", issued in Venezuela, Brasil, France and South Africa. The following year, La Scala recorded in Italy an album with Vittorio De Scalzi, the lead singer of the Italian progressive rock band New Trolls. In 1979, La Scala along with Cuban-Venezuelan singer María Conchita Alonso in the lead vocals formed Ambar, a disco music duo. They recorded "Love Maniac", and the song "It's Time to Dance" became a hit, earning them a Gold album