Did both Ormindo and Doktor Faust perform at the Teatro San Cassiano opera house?
Doktor Faust: Doktor Faust is an opera by Ferruccio Busoni with a German libretto by the composer himself, based on the myth of Faust. Doktor Faust:  Busoni worked on the opera, which he intended as his masterpiece, between 1916 and 1924, but it was still incomplete at the time of his death.
i don't know