An opera was added to these concerts, Mozart's Così fan tutte, a work practically unknown by the French public at the time.

In 1970, Mstislav Rostropovich premiered Henri Dutilleux's Tout un monde lointain..., now considered one of the most important additions to the cello repertoire of the 20th century,[5] at the festival.

Under the direction of Bernard Lefort from 1974 to 1982, the Festival became devoted to bel canto opera and, in general, a celebration of the voice.

Performances of 19th century operas by Verdi and Donizetti were given by the reigning stars of bel canto such as Montserrat Caballé, José Carreras, Marilyn Horne, and Katia Ricciarelli, and the Festival spread throughout the town.

From 2007 the festival was directed by Bernard Foccroulle, who commissioned, among others, George Benjamin's opera with Martin Crimp Written on Skin.