The main character then sings the pleading refrain "
In the second act of this opera, one character sings a tune from Gr?ry's Richard the Lion-Hearted after a masque featuring Daphnis, Chloe, and Plutus is presented at a masked ball.  After that Faithful Shepherdess intermezzo, the main character hides in a bedroom, revealing himself after the occupant sings a French song from her youth, "Je crains de lui parler la nuit."  The main character then sings the pleading refrain "Yesli, kogda-nibud znali," but the Countess is unmoved.  Prince Yeletski has his revenge when the main character fails to get the ace he expects in, FTP, this 1890 opera about a gambler named Herman, based on a story by Pushkin and composed by Tchaikovsky.
In the second act of this opera, one character sings a tune from Gr?ry's Richard the Lion-Hearted after a masque featuring Daphnis, Chloe, and Plutus is presented at a masked ball.  
The Queen of Spades or Pique Dame or Pikovaya Dama