Plagal Fourth Mode "Triphonos" (Canons)

Many Odes of Plagal Fourth Mode Canons are sung in the Eirmologic style from Ga. This Ga is often notated with a Ne phthora placed above it. Because Ga is three notes above the normal Plagal Fourth primary note, Ne, this variant is called "Triphonos". This variant differs from the other Ga-based variant in its theseis and cadence notes.