Who is credited with the creation of plainsong?

The appropriate response is Pope Gregory I. "Gregorian" serenade was named for and credited to Pope Gregory I is a mishap of governmental issues and turn doctoring. The strain between the Pope (the Bishop of Rome) and different Bishops with respect to the expert of the Pope as "first among breaks even with" was coordinated by the pressure between the Pope, as profound leader of Rome, and Rome's common rulers.