THE PHRYGIAN MUSIC

In classical music, a descending tetrachord (line of four notes) with intervals tone-tone-semitone can be called a Phrygian progression, and forms the basis of the Phrygian mode.

The Phrygian mode is equivalent to the Dorian mode in ancient Greek musicology (due to a misinterpretation of the Latin texts of Boethius, medieval modes were given the wrong Greek names by the early Christian church in the 8^th century).

The Phrygian diatonic scale is simply two Phrygian tetrachords separated by a whole tone. Melodies written in the Phrygian scale have a distinctive mood to them, characterised by the minor sound (due to the minor third) and a slightly unexpected lowered second degree. 

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