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."
Vilnius City Opera Vilnius City Opera Vilnius City Opera - a team of independent artists, which started in 2006, when director Dalia Ibelhauptaitė , conductor Gintaras Rinkevičius and scene artist Juozas Statkevičius joined their forces together in staging opera by Giacomo Puccini "La bohème". The artists called themselves "bohemiečiai" ("the Bohemians") since then. After 8 years of activity the troupe acquired a status of professional theatre and became a "Vilnius City Opera". "Vilnius City Opera" has no building and staging operas in Vilnius Congress Concert Hall. One of the main aims of VCO is to make opera genre more widely available, to liberate