. . . . . "Robert Leonhardt (1877 \u2013 February 2, 1923) was an operatic baritone who sang several notable roles with the New York Metropolitan Opera between 1913 and 1922. He made numerous recordings for major record labels, both in Europe and in the United States."@en . . "Leonhardt, Robert"@en . "Robert Leonhardt"@en . . "1922Z"^^ . "Robert Leonard"@en . "Leonard, Robert"@en . . "1900Z"^^ . "1923Z"^^ . . "solo_singer" . "1877Z"^^ . "German opera singer" . "1923-02-02Z"^^ . .