Maryla Jonas
...that piano player and pupil of Ignacy Jan Paderewski, Maryla Jonas, debuted at the age of 9?
...that <a href="./Piano" id="mwBLU" rel="mw:WikiLink" title="Piano">piano</a> player and pupil of <a href="./Ignacy_Jan_Paderewski" id="mwBLY" rel="mw:WikiLink" title="Ignacy Jan Paderewski">Ignacy Jan Paderewski</a>, <b id="mwBLc"><a href="./Maryla_Jonas" id="mwBLg" rel="mw:WikiLink" title="Maryla Jonas">Maryla Jonas</a></b>, debuted at the age of 9?