At the Commonwealth Lyric Theater (from left) are: conductor Adrian Bryttan, soprano Olga Lisovskaya and bass Dmytro Pavlyuk. NEWTON, Mass. – Three Ukrainian artists assume principal roles in a new production of Modest Mussorgsky’s “Boris Godunov” by the Commonwealth Lyric Theater (CLT). Conductor Adrian Bryttan will lead a cast that includes bass Dmytro Pavlyuk from...