Petra Lang
... that Petra Lang, who performed the parts of Brangäne and Ortrud at the Bayreuth Festival as a mezzo-soprano, was the Isolde of 2016?
... that <b id="mw3Q"><a href="./Petra_Lang" id="mw3g" rel="mw:WikiLink" title="Petra Lang">Petra Lang</a></b>, who performed the parts of <a href="./Tristan_und_Isolde" id="mw3w" rel="mw:WikiLink" title="Tristan und Isolde">Brangäne</a> and <a href="./Lohengrin_(opera)" id="mw4A" rel="mw:WikiLink" title="Lohengrin (opera)">Ortrud</a> at the <a href="./Bayreuth_Festival" id="mw4Q" rel="mw:WikiLink" title="Bayreuth Festival">Bayreuth Festival</a> as a mezzo-soprano, was the Isolde of 2016?