The Ambrosian Rite

Milan has its own historic Catholic rite known as the Ambrosian Rite (it: rito ambrosiano). It varies slightly from the typical Catholic rite (the Roman, used in all other western regions), with some differences in the liturgy and mass celebrations, and in the calendar (for example, the date of carnival is celebrated some days after the common date). The Ambrosian rite is also practised in other surrounding locations in Lombardy and in the Swiss canton of Ticino.

Another important difference concerns the liturgical music. The Gregorian chant was completely unused in Milan and surrounding areas, because the official one was its own Ambrosian chant, definitively established by the Council of Trent (1545-1563) and earlier than the Gregorian. To preserve this music there has developed the unique schola cantorum, a college, and an Institute in partnership with the "Pontifical Ambrosian Institute of Sacred Music" (PIAMS) in Rome.