Medieval Byzantine hymnody refers to the sacred music tradition of the Byzantine Empire, which flourished from the 4th to the 15th centuries. This hymnody is characterized by its use of Greek texts and a unique system of notation, emphasizing the spiritual and liturgical aspects of worship. The hymns were often performed during church services, enhancing the religious experience for the faithful. The music of Byzantine hymnody is primarily monophonic, meaning it consists of a single melodic line without harmony. It includes various forms, such as kontakia and akolouthia, which are structured to accompany specific liturgical events. This tradition has significantly influenced later Christian music, including Eastern Orthodox and Western traditions.