Experts still argue over which version of Mussorgsky's historical epic is definitive.
Experts still argue over which version of Mussorgsky's historical epic is definitive. The reluctant Boris, filled with foreboding and guilt for a murder, is appointed tsar. The people grow hungry and rebellious. Pretenders vie for the throne. Boris becomes deranged, the soul of Russia – expressed through anguished choruses – troubled. This is one of the Russian operatic greats.