It’s scene five of Kasper Holten’s production of Tchaikovsky’s Eugene Onegin and Michael Fabiano’s Lensky is alone with a snow-covered branch and his thoughts. Well, not quite alone. At the other side of the stage stands the man he is about to face in a duel: his friend Onegin, who’s apparently arrived ahead of the appointed time and is listening to every word of Lensky’s anguished soliloquy.