Plagale (Échelle ~) (adj.)
term used for the church-modes in Mediaeval music that lie a quarter below the authentic modes; a melody is called plagal if the tonic lies a quarter above its lowest note (not counting a leading tone); ➺ Authentic
➺ Authente.
Montbel, Eric: Les musettes de Cour dites aussi «musettes baroques». In: Ricros (et al.): La cabrette… (2017), p.157 (mélodies plagales).
Ricros, André & Montbel, Eric: Hypothèses sur la naissance de la cabrette. In: Ricros (et al.): La cabrette… (2017), p.349.