Marlise Wendels
... that at the height of her opera career Marlise Wendels sometimes sang in up to 300 performances in a single season?
... that at the height of her opera career <b id="mwBgI"><a href="./Marlise_Wendels" id="mwBgM" rel="mw:WikiLink" title="Marlise Wendels">Marlise Wendels</a></b> sometimes sang in up to 300 performances in a single season?