William Wernigk
... that William Wernigk performed four roles in Der Rosenkavalier during his decades at the Vienna State Opera, including the Innkeeper on a 1933 recording conducted by Robert Heger?
... that <b id="mwB-A"><a href="./William_Wernigk" id="mwB-E" rel="mw:WikiLink" title="William Wernigk">William Wernigk</a></b> performed four roles in <i id="mwB-I"><a href="./Der_Rosenkavalier" id="mwB-M" rel="mw:WikiLink" title="Der Rosenkavalier">Der Rosenkavalier</a></i> during his decades at the <a href="./Vienna_State_Opera" id="mwB-Q" rel="mw:WikiLink" title="Vienna State Opera">Vienna State Opera</a>, including the Innkeeper on a 1933 recording conducted by <a href="./Robert_Heger" id="mwB-U" rel="mw:WikiLink" title="Robert Heger">Robert Heger</a>?