Beneventan chant
...that the native ornate plainchant of Benevento, Beneventan chant, co-existed with Gregorian chant for over a century before it was abolished by papal decree?
...that the native ornate <a href="./Plainsong" id="mwBTU" rel="mw:WikiLink" title="Plainsong">plainchant</a> of <a href="./Benevento" id="mwBTY" rel="mw:WikiLink" title="Benevento">Benevento</a>, <b id="mwBTc"><a href="./Beneventan_chant" id="mwBTg" rel="mw:WikiLink" title="Beneventan chant">Beneventan chant</a></b>, co-existed with <a href="./Gregorian_chant" id="mwBTk" rel="mw:WikiLink" title="Gregorian chant">Gregorian chant</a> for over a century before it was abolished by papal decree?