Teatro alla Scala is an opera house in Milan, Italy. The theatre was inaugurated on 3 August 1778 and was originally known as the Nuovo Regio Ducale Teatro alla Scala (New Royal-Ducal Theatre alla Scala). The premiere performance was Antonio Salieri's Europa riconosciuta. Most of Italy's greatest operatic artists, and many of the finest singers from around the world, have appeared at La Scala. The theatre is regarded as one of the leading opera and ballet theatres in the world and is home to the La Scala Theatre Chorus, La Scala Theatre Ballet and La Scala Theatre Orchestra.