IPA: //ˈpleɪɡəl//
KK: /ˈpleɪgəl/
Relating to a musical mode that has a specific range and progression, typically involving the fourth and fifth notes of a scale.
The choir sang in a plagal mode, creating a soothing and harmonious sound.
Plagal is derived from the Greek word "plagios" (meaning oblique or sideways) and the suffix "-al" (meaning pertaining to). The term refers to a musical mode that is considered to be a variation of the authentic mode, often described as being 'sideways' or 'oblique' in relation to the tonic.
Think of 'plagios' meaning 'sideways' to remember that 'plagal' refers to a musical mode that is related to the authentic mode but in a different, oblique way.