A

David

Darling

Gregorian chant

Gregorian chant, also called plain-song, is a musical form from the early Catholic Church in which all voices sing one part in unison. The music has no feeling of tempo, and most of the motion of the notes is step-wise. Most Gregorian chants are part of two liturgical rites – the Mass and the Offices. Origins traditionally are ascribed to the period of Pope Gregory I (590–604).