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 number-one single for La Scala. At the 1991 Lo Nuestro Awards, La Scala was nominated for Pop Artist, Pop Song ("El Cariño Es Como Una Flor") and Album of the Year ("Cuando Yo Amo"). La Scala also wrote and produced in 1996 an album for Viviana Gibelli. The same year he released the song "Cuando Mi Amada Me Ama", from the album "Sentimientos". The following year the album "En Cuerpo y Alma" hit the record stores. La Scala produced a group named Axies in 2000 and also began a tour in Latin America, the United States and Europe. In 2007,