Claudette Sorel
... that Claudette Sorel discovered and premiered two previously unknown Rachmaninoff nocturnes?
... that <b id="mwBaU"><a href="./Claudette_Sorel" id="mwBaY" rel="mw:WikiLink" title="Claudette Sorel">Claudette Sorel</a></b> discovered and premiered two previously unknown <a href="./Sergei_Rachmaninoff" id="mwBac" rel="mw:WikiLink" title="Sergei Rachmaninoff">Rachmaninoff</a> nocturnes?