Henry Gray
... that blues musician Henry Gray is credited as helping to create the distinctive sound of the Chicago blues piano?
... that <a href="./Blues" id="mwDto" rel="mw:WikiLink" title="Blues">blues</a> musician <b id="mwDts"><a href="./Henry_Gray_(musician)" id="mwDtw" rel="mw:WikiLink" title="Henry Gray (musician)">Henry Gray</a></b> is credited as helping to create the distinctive sound of the <a href="./Chicago" id="mwDt0" rel="mw:WikiLink" title="Chicago">Chicago</a> <a class="mw-redirect" href="./Blues_piano" id="mwDt4" rel="mw:WikiLink" title="Blues piano">blues piano</a>?