A swan song

The first post -war production of the "Meistersingers" of Wagner. The opera theater in Oxford collected the best troupe. But shortly before the premiere, Edwin Shorthaus, performing the main party, was found hanged in his own dressing room. The police consider this suicide, because the room was locked from the inside. However, Jereweis Fenh, who arrived at the crime scene, is sure - Shorthaus, in whom talent was combined with an incredibly absurd character, killed. But who did it? The young conductor, whom the deceased poisonedly poisoned? The first tenor, whose wife Shorthouse looked unsuccessfully? Or a couple of novice artists who clearly know much more about what happened than they say?..