Margarethe Bence
... that the American contralto Margarethe Bence appeared as Marcellina at the Salzburg Festival, as Erda in Bayreuth, and in a premiere at the Schwetzingen Festival?
... that the American <a href="./Contralto" id="mwAUs" rel="mw:WikiLink" title="Contralto">contralto</a> <b id="mwAUw"><a href="./Margarethe_Bence" id="mwAU0" rel="mw:WikiLink" title="Margarethe Bence">Margarethe Bence</a></b> appeared as <a href="./The_Marriage_of_Figaro" id="mwAU4" rel="mw:WikiLink" title="The Marriage of Figaro">Marcellina</a> at the <a href="./Salzburg_Festival" id="mwAU8" rel="mw:WikiLink" title="Salzburg Festival">Salzburg Festival</a>, as <a href="./Der_Ring_des_Nibelungen" id="mwAVA" rel="mw:WikiLink" title="Der Ring des Nibelungen">Erda</a> in <a href="./Bayreuth_Festival" id="mwAVE" rel="mw:WikiLink" title="Bayreuth Festival">Bayreuth</a>, and in a premiere at the <a href="./Schwetzingen_Festival" id="mwAVI" rel="mw:WikiLink" title="Schwetzingen Festival">Schwetzingen Festival</a>?