"Maria Friderike Radner (German: [\u02C8\u0281a\u02D0dn\u0250]; 7 May 1981 \u2013 24 March 2015) was a German contralto who performed internationally in opera and in concerts.Radner studied at the Robert Schumann Hochschule in D\u00FCsseldorf, Germany. Both Stern magazine and Munich's Abendzeitung described her as an \"extremely talented interpreter of Wagner's music\"."@en . . . . . . "Radner, Maria Friderike"@en . . "1981-05-07Z"^^ . . "Maria Radner"@en . "2015-03-24Z"^^ . "2015Z"^^ . "German opera singer" . . . "Maria Friderike Radner"@en . "1981Z"^^ .