It was popularized during the reign of Gregory IV
a gregorian chant was used as the base part for the motet and was called the cantus firmus
Gregorian chant is beautiful and prayerful music.
'Polyphony' does not describe Gregorian chant.
Responsorial
syllabic
Gregorian chant or Plaint chant is known as monophony. Many voices, unaccompanied, and all singing in unison.
monophonic
Gregorian chant
nope. Gregorian chant is the central tradition of Western plainchant, a form of monophonic liturgical chant of Western Christianity that accompanied the celebration of Mass and other ritual services.
Plainchant, Gregorian chant, monophonic chant, plainsong.
because it is.
Gregorian chant