• 78 Music Library (Mills)

• 85 Videos, Slides, Films
• 1 3-D Objects, Models, Sculpture
• 1 Sound Recordings

• 1 Compact Discs

• 10 Operas
• 3 Man-woman relationships
• 2 Caesar, Julius
• 2 Nero, Emperor of Rome, 37-68
• 2 Poppaea Sabina, Empress, consort of Nero, Emperor of Rome, -65
• 2 Titus, Emperor of Rome, 40-81
• 1 Americans
• 1 Borgia, Lucrezia, 1480-1519
• 1 Christian women saints
• 1 Dante Alighieri, 1265-1321
• 1 Don Juan (Legendary character)
• 1 Electronic music
• 1 Empresses
• 1 Eurydice (Greek mythological character)
• 1 Figaro (Fictitious character)
• 1 Good and evil
• 1 Gruberova, Edita, 1946-2021
• 1 Hercules (Roman mythological character)
• 1 Horne, Marilyn
• 1 Instrumental music
• 1 Interracial marriage
• 1 Joan, of Arc, Saint, 1412-1431
• 1 Lecouvreur, Adrienne, 1692-1730
• 1 Married people
• 1 Medea, consort of Aegeus, King of Athens (Mythological character)

• 26 Mozart, Wolfgang Amadeus, 1756-1791
• 21 Deutsche Grammophon (Firm)
• 17 Opus Arte (Firm)
• 15 Verdi, Giuseppe, 1813-1901
• 14 TDK Kabushiki Kaisha
• 14 Teatro alla Scala
• 14 Unitel Film- und Fernsehproduktionsgesellschaft mbH
• 12 Da Ponte, Lorenzo, 1749-1838
• 12 Decca Record Company
• 11 Radiotelevisione italiana
• 10 Domingo, Plácido, 1941-
• 10 Fleischer, Bernhard
• 10 Puccini, Giacomo, 1858-1924
• 10 Rossini, Gioacchino, 1792-1868
• 10 Salzburger Festspiele, (2006 : Salzburg, Austria)
• 9 Gruppo ENI
• 9 Muti, Riccardo
• 8 Donizetti, Gaetano, 1797-1848
• 7 Arthaus Musik (Firm)
• 7 Beaumarchais, Pierre Augustin Caron de, 1732-1799
• 7 Konzertvereinigung Wiener Staatsopernchor
• 7 Piave, Francesco Maria, 1810-1876
• 7 Wiener Philharmoniker
• 6 Giacosa, Giuseppe, 1847-1906
• 6 Illica, Luigi, 1857-1919

• 5 German
• 4 English
• 3 French
• 2 Latin
• 2 Spanish
• 1 Dutch
• 1 Multiple languages

• 1 France
• 1 Japan
• 1 Rome

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