Viktor Selyavin is best known for his interpretation of Lensky in  an opera composed by who?
Viktor Selyavin:  His repertoire included the tenor roles of most major operas, but he is best known for his interpretation of Lensky in "Eugene Onegin". Eugene Onegin (opera):  24, is an opera ("lyrical scenes") in 3 acts (7 scenes), composed by Pyotr Ilyich Tchaikovsky.
Pyotr Ilyich Tchaikovsky