Maria Friesenhausen
... that Maria Friesenhausen sang soprano solo with the NDR Chor in the 1950s and trained students of the University of Dortmund for an opera performance in 2001?
... that <b id="mwByQ"><a href="./Maria_Friesenhausen" id="mwByU" rel="mw:WikiLink" title="Maria Friesenhausen">Maria Friesenhausen</a></b> sang soprano solo with the <a href="./NDR_Chor" id="mwByY" rel="mw:WikiLink" title="NDR Chor">NDR Chor</a> in the 1950s and trained students of the <a class="mw-redirect" href="./University_of_Dortmund" id="mwByc" rel="mw:WikiLink" title="University of Dortmund">University of Dortmund</a> for an opera performance in 2001?