• 7 Books

• 7 Operas
• 2 Verdi, Giuseppe, 1813-1901
• 2 Wagner, Richard, 1813-1883
• 1 Boris Fyodorovich Godunov, Czar of Russia, 1551 or 1552-1605
• 1 Boris Godunov (1872)
• 1 Carlos, Prince of Asturias, 1545-1568
• 1 Don Carlos
• 1 Don Giovanni
• 1 Don Juan (Legendary character)
• 1 Drama
• 1 History and criticism
• 1 Legends
• 1 Libretto
• 1 Mozart, Wolfgang Amadeus, 1756-1791
• 1 Mussorgsky, Modest Petrovich, 1839-1881. (1872)
• 1 Opera
• 1 Otello
• 1 Othello (Fictitious character from Shakespeare)
• 1 Parsifal
• 1 Perceval (Legendary character)
• 1 Tannhäuser
• 1 Valkyries (Norse mythology)

• 3 Porter, Andrew, 1928-2015
• 3 Wagner, Richard, 1813-1883
• 2 English National Opera
• 2 Royal Opera House (London, England)
• 2 Verdi, Giuseppe, 1813-1901
• 1 Batchelor, Jennifer
• 1 Boito, Arrigo, 1842-1918
• 1 Du Locle, Camille, 1832-1903
• 1 Mussorgsky, Modest Petrovich, 1839-1881
• 1 Méry, Joseph, 1798-1865
• 1 Pushkin, Aleksandr Sergeevich, 1799-1837
• 1 Russell, Charles C., 1934-
• 1 Schiller, Friedrich, 1759-1805
• 1 Shakespeare, William, 1564-1616

• 3 Italian
• 1 French
• 1 German
• 1 Russian

• 3 Librettos
• 1 librettos (documents for music)

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