Old Roman chant

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Old Roman chant is the liturgical plainchant repertory of the Roman rite of the early Christian Church. It was formerly performed in Rome, and, although it is closely related to Gregorian chant, the two are distinct. Gregorian Chant gradually supplanted Old Roman Chant between the 11th century and the 13th century AD. Unlike other chant traditions (such as Ambrosian chant, Mozarabic chant, and Gallican chant), Old Roman chant and Gregorian chant share essentially the same liturgy and the same texts. Many of their melodies are also closely related. Although primarily associated with the churches of Rome, the Old Roman chant was also performed in parts of central Italy, and it was possibly performed much more widely.