Rosl Zapf
... that Rosl Zapf, a mezzo-soprano of the Oper Frankfurt who took part in world premieres, appeared at the Salzburg Festival in Mozart's Die Zauberflöte conducted by Georg Solti?
... that <b id="mwCOI"><a href="./Rosl_Zapf" id="mwCOM" rel="mw:WikiLink" title="Rosl Zapf">Rosl Zapf</a></b>, a <a href="./Mezzo-soprano" id="mwCOQ" rel="mw:WikiLink" title="Mezzo-soprano">mezzo-soprano</a> of the <a href="./Oper_Frankfurt" id="mwCOU" rel="mw:WikiLink" title="Oper Frankfurt">Oper Frankfurt</a> who took part in world premieres, appeared at the <a href="./Salzburg_Festival" id="mwCOY" rel="mw:WikiLink" title="Salzburg Festival">Salzburg Festival</a> in Mozart's <i id="mwCOc"><a href="./The_Magic_Flute" id="mwCOg" rel="mw:WikiLink" title="The Magic Flute">Die Zauberflöte</a></i> conducted by <a href="./Georg_Solti" id="mwCOk" rel="mw:WikiLink" title="Georg Solti">Georg Solti</a>?