Matthias Hölle
... that Matthias Hölle, a regular bass singer at the Bayreuth Festival, appeared in the world premieres of Stockhausen's Donnerstag aus Licht and Samstag aus Licht at La Scala in Milan?
... that <b id="mwBvo"><a href="./Matthias_Hölle" id="mwBvs" rel="mw:WikiLink" title="Matthias Hölle">Matthias Hölle</a></b>, a regular bass singer at the <a href="./Bayreuth_Festival" id="mwBvw" rel="mw:WikiLink" title="Bayreuth Festival">Bayreuth Festival</a>, appeared in the world premieres of Stockhausen's <i id="mwBv0"><a href="./Donnerstag_aus_Licht" id="mwBv4" rel="mw:WikiLink" title="Donnerstag aus Licht">Donnerstag aus Licht</a></i> and <i id="mwBv8"><a href="./Samstag_aus_Licht" id="mwBwA" rel="mw:WikiLink" title="Samstag aus Licht">Samstag aus Licht</a></i> at <a href="./La_Scala" id="mwBwE" rel="mw:WikiLink" title="La Scala">La Scala</a> in Milan?