• 3 Music Library (Mills)

• 7 Videos, Slides, Films

• 4 DVDs

• 4 Operas
• 1 Boris Fyodorovich Godunov, Czar of Russia, 1551 or 1552-1605
• 1 Music videos

• 6 Billy, Bertrand de
• 6 Opus Arte (Firm)
• 6 Polaski, Deborah
• 6 Struckmann, Falk
• 6 Wagner, Richard, 1813-1883
• 4 Gran Teatre del Liceu (Barcelona, Spain)
• 4 Gran Teatre del Liceu (Barcelona, Spain). Orquestra Simfònica
• 4 Kupfer, Harry
• 4 Treleaven, John, 1950-
• 3 Braun, Lioba
• 3 Heinrich, Reinhard, 1935-
• 3 Schavernoch, Hans
• 3 Voss, Manfred
• 2 Berkeley-Steele, Richard
• 2 Salminen, Matti
• 1 Arnet, Marie
• 1 Asawa, Brian
• 1 Bargallo, Toni
• 1 Bargeltó, Tony
• 1 Bonig, Andrea
• 1 Bové, Xavi
• 1 Bönig, Andrea
• 1 Clark, Graham
• 1 Clark, Graham, 1941-

• 6 German
• 1 Russian

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