A character who opposes two of these people quarrels with his son over the girl Emma in an opera that was left with unfinished orchestration. In an opera, one of these people chooses Marfa as his bride, but she goes insane after being poisoned at their engagement party. The orchestra imitates the sound of bells at the start of a scene (10[1])in which a crowd chants “Glory!” in an opera about one of these people who hallucinates a murdered child. An 1836 opera titled for one of these people features a scene in which the Polish army is led into a blizzard and was followed (-5[1])by its composer’s opera Ruslan and Lyudmila. (10[1])That opera by Mikhail Glinka is titled (10[1])A Life (10[1])for [one of these (10[1])people]. For 10 points, what kind of person is the main character of Modest Mussorgsky’s opera Boris Godunov? ■END■ (10[1]0[2])