• 5 Books

• 2 Composers
• 1 Conducting
• 1 Conductors (Music)
• 1 Leider, Frida, 1888-1975
• 1 Music
• 1 Music publishers
• 1 Music trade
• 1 Performance
• 1 Roth, Ernst, 1896-1971
• 1 Singers
• 1 Verdi, Giuseppe, 1813-1901
• 1 Wagner, Richard, 1813-1883
• 1 Walter, Bruno, 1876-1962

• 1 Gray, Andrew
• 1 Leider, Frida, 1888-1975
• 1 Roth, Ernst, 1896-1971
• 1 Wagner, Richard, 1813-1883
• 1 Walter, Bruno, 1876-1962
• 1 Weaver, William, 1923-2013
• 1 Whittall, Mary

• 5 English

• 2 Germany
• 1 England
• 1 Italy

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