What Are Plagal Modes?

:

a church mode

(such as Hypophrygian or Hypomixolydian) with the same final (see final entry 2 sense c) as its parallel authentic mode but with an ambitus a fourth lower A plagal mode is found a fourth below its authentic, and the final of the authentic serves also for the plagal.—

What is the meaning of plagal?

1 of

a church mode

: having the keynote on the fourth scale step — compare authentic sense 4a. 2 of a cadence : progressing from the subdominant chord to the tonic — compare authentic sense 4b.

What is authentic and plagal modes?

Modes are divided into two categories: authentic modes and plagal modes. Each

plagal mode is associated with an authentic mode

. Both have the same notes and the same Final. The difference between an authentic mode and its related plagal lies in the nature of the dominant note and in the range or ambitus.

What is an authentic mode?

: a church mode (such as Phrygian or Mixolydian) whose ambitus comprises approximately the octave above the final (see final entry 2 sense c) An authentic mode

is based on its Final or lowest note

…— Rupert Hughes, The Musical Guide, 1903 — compare plagal mode — see church mode illustration.

What are modes in Gregorian chant?

The four Gregorian modes are

Dorian, Phrygian, Lydian and Mixolydian

.

What is the 8th mode?

The eight modes

Seven of them were given names identical with those used in the musical theory of ancient Greece: Dorian, Hypodorian, Phrygian, Hypophrygian, Lydian, Hypolydian, and Mixolydian, while the name of the eighth mode,

Hypomixolydian

, was adapted from the Greek.

What are the 4 medieval modes?

Medieval modes (also called Gregorian mode or church modes) were numbered, either from 1 to 8, or from 1 to 4 in pairs (authentic/plagal), in which case they were usually named

protus (first), deuterus (second), tertius (third), and tetrardus (fourth)

, but sometimes also named after the ancient Greek tonoi (with which, …

What is a 4 to 1 cadence called?

The term “

minor plagal cadence”

is used to refer to the iv–I progression. Sometimes a combination of major and minor plagal cadence is even used (IV–iv–I).

What’s a plagal cadence?

:

a musical cadence in which subdominant harmony resolves to the tonic

(see tonic entry 2 sense 2) — called also amen cadence.

Why is it called a plagal cadence?

Plagal cadence

It is also known as the Amen cadence

because of its frequent setting to the text “Amen” in hymns

.

What is the purpose of church modes?

Church mode, also called ecclesiastical mode, in music, any

one of eight scalar arrangements of whole and half tones

, derived by medieval theorists, most likely from early Christian vocal convention.

How many modes are there?

Key Takeaways. The major scale contains

seven modes

: Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, and Locrian. Modes are a way to reorganize the pitches of a scale so that the focal point of the scale changes. In a single key, every mode contains the exact same pitches.

Is Gregorian chant still used today?

Although Gregorian chant is no longer obligatory,

the Roman Catholic Church still officially considers it the music most suitable for worship

. During the 20th century, Gregorian chant underwent a musicological and popular resurgence.

Which are the four church modes?

How many unique church modes are there?

Related to the diatonic modes are the

eight church modes

or Gregorian modes, in which authentic and plagal forms of scales are distinguished by ambitus and tenor or reciting tone.