relating to the calendar introduced by Pope Gregory XIII in 1582

pertaining to the style of music or liturgical practices associated with Gregory I, particularly in the context of Gregorian chant

ग्रेगरी I से संबंधित संगीत या लिटर्जिकल प्रथाओं

English Usage: The choir performed a beautiful Gregorian chant during the service.

Hindi Usage: गायन ने सेवा के दौरान एक सुंदर ग्रेगोरियन गान प्रस्तुत किया।