There is a sonic splendor in Russian opera like no other, so we will explore the epic sounds of Mussorgsky’s “Boris Godunov” and Borodin’s “Prince Igor,” examine the opulent orchestration of Rimsky-Korsakov’s “Czar Saltan,” “Sadko” and “Coq d’Or,” thrill to the romantic melodies of Tchaikovsky’s “Eugene Onegin” and “The Queen of Spades,” laugh at the brilliant characterizations of Shostakovich’s “Lady MacBeth of Mtsensk,” and consider the profundity of Prokofiev’s “War and Peace.” Those new to opera as well as those more experienced are most welcome.