Carl Heinrich Graun’s “Adriano in Siria”—set to a libretto by Pietro Metastasio—is a compelling example of mid-18th-century opera seria, a genre that once dominated the European stage. First performed in Berlin in 1746, Graun’s setting was one of more than seventy opera settings of Metastasio’s libretto between 1732 and 1828, attesting to its immense popularity. This new live recording from {…}