More than 60 composers have set Metastasio's libretto for *L'Olimpiade* to music. Among them are Caldara, Vivaldi, Hasse, Leo and Scarlatti, as well as Piccinni, Paisiello and Cherubini, but also Pergolesi, who premiered his "Olimpiade" during the carnival of 1735 at the Teatro Tordinona in Rome. It would be his last opera seria, as the composer died the following year at just twenty-five years old. His version is considered by many to be the most inspired of all, characterized by musical originality and a cheerful freshness that is at once brilliant and refined. Following the rediscovery of the unpublished D major mass, Giulio Prandi and his Ghislieri Ensemble return to Pergolesi with a recording of his operatic masterpiece, made in the 18th-century theater in Jesi, his birthplace: an initiative of the Pergolesi-Spontini Foundation, which has been championing his legacy for many years.