Spas Wenkoff
... that Spas Wenkoff, first a tenor at a Bulgarian amateur theatre, appeared as Tristan at the Staatsoper Dresden, and was then invited to sing the role at the centenary Bayreuth Festival?
... that <b id="mwBI8"><a href="./Spas_Wenkoff" id="mwBJA" rel="mw:WikiLink" title="Spas Wenkoff">Spas Wenkoff</a></b>, first a tenor at a Bulgarian amateur theatre, appeared as <a href="./Tristan_und_Isolde" id="mwBJE" rel="mw:WikiLink" title="Tristan und Isolde">Tristan</a> at the Staatsoper Dresden, and was then invited to sing the role at the centenary <a href="./Bayreuth_Festival" id="mwBJI" rel="mw:WikiLink" title="Bayreuth Festival">Bayreuth Festival</a>?