Roll, Jordan, Roll
... that the spiritual "Roll, Jordan, Roll" has been cited as the basis of blues?
... that the <a class="mw-redirect" href="./Spiritual_(music)" id="mw1g" rel="mw:WikiLink" title="Spiritual (music)">spiritual</a> "<b id="mw1w"><a href="./Roll,_Jordan,_Roll" id="mw2A" rel="mw:WikiLink" title="Roll, Jordan, Roll">Roll, Jordan, Roll</a></b>" has been cited as the basis of <a href="./Blues" id="mw2Q" rel="mw:WikiLink" title="Blues">blues</a>?