Descending tetrachord
![](../I/m/Phrygian_tetrachord.png)
![](../I/m/Phrygian_half_cadence_in_C.png)
The Phrygian progression creates a descending tetrachord[1] bassline:
-♭
-♭
-
.
Phrygian half cadence: i-v6-iv6-V in c minor (bassline: c -b♭-a♭-g)
Play .
![](../I/m/Scale_deg_8.svg.png)
![](../I/m/Scale_deg_7.svg.png)
![](../I/m/Scale_deg_6.svg.png)
![](../I/m/Scale_deg_5.svg.png)
Phrygian half cadence: i-v6-iv6-V in c minor (bassline: c -b♭-a♭-g)
![](../I/m/Loudspeaker.svg.png)
In music theory, the descending tetrachord is a series of four notes from a scale, or tetrachord, arranged in order from highest to lowest, or descending order. For example -♭
-♭
-
, as created by the Andalusian cadence. The descending tetrachord may fill a perfect fourth or a chromatic fourth.
See also
Sources
- ↑ "Phrygian Progression", Classical Music Blog.
External links
- "Tetrachord", Britannica.com.