plainsong
body of monophonic chants used in the liturgies of the Western Christian Church
Gallican chant
music genre
Gregorian chant
form of song
Mozarabic chant
liturgical plainchant repertory of the Visigothic/Mozarabic rite of the Catholic Church,
Ambrosian chant
liturgical plainchant repertory of the Ambrosian rite of the Roman Catholic Church
Old Roman chant
liturgical vocal music of the Roman rite of the Early Christian Church