1098-1179 1291-1361 15thcentury 16thcentury 255 500-1400 778-807 accompaniments active12thcentury agnusdei(music) antiphonaries antiphons(music) breviaries byzantinechants catholicchurch chants churchmusic churchmusichistory cluny(benedictineabbey) congresses credo(music) cultpeter divineoffice divineoffice(music) england excerpts francodecolonia graduals(liturgicalbooks) guido hildegard history historyandcriticism historycatholicchurch hymns indexes kyrieeleison(music) latin(medievalandmodern) liturgics liturgy liturgycatholicchurch léonin manuscripts masses monasticandreligiouslife motets music musicalnotation notenschrift philippede responses(music) sacredvocalmusic sacredvocalquartets sacredvocaltrios salamanca simpert sources spain texts textscatholicchurch to1500 tropers unaccompanied vitry zaragoza