Egardus
...that only three works of Egardus, a fourteenth century composer whose music was known in Flanders, Italy, and Poland, are known to have survived?
...that only three works of <b id="mwBwc"><a href="./Egardus" id="mwBwg" rel="mw:WikiLink" title="Egardus">Egardus</a></b>, a <a class="mw-redirect" href="./Music_of_the_trecento" id="mwBwk" rel="mw:WikiLink" title="Music of the trecento">fourteenth century</a> <a href="./Composer" id="mwBwo" rel="mw:WikiLink" title="Composer">composer</a> whose music was known in <a href="./Flanders" id="mwBws" rel="mw:WikiLink" title="Flanders">Flanders</a>, <a href="./Italy" id="mwBww" rel="mw:WikiLink" title="Italy">Italy</a>, and <a href="./Poland" id="mwBw0" rel="mw:WikiLink" title="Poland">Poland</a>, are known to have survived?