Iolanta, Act I: "Why Have I Not Known This Before?" - Song by Giacomo Meyerbeer, Nikolai Malaskin, Nikolai Rubinstein, Ambroise Thomas, Nikolai Krotkov, César Cui, Giacomo Puccini, Eduard Nápravnik, Jules Massenet, Jean-Jacques Rousseau, Mikhail Glinka, Anton Rubinstein, Pyotr Ilyich Tchaikovsky, Giuseppe Verdi, Charles Gounod, Lydia Lipkowska