CatholicCheck® on Instagram: "Glagolitic chant is an ancient Croatian form of liturgical singing closely connected to the Glagolitic alphabet, which was used in Croatian religious life from the 9th until the 19th century. This chant developed within the Roman Catholic rite but was performed in Old Church Slavonic, making it a rare example of a Slavic language used in Western liturgy. Early Glagolitic ritual books do not include musical notation, so the original melodies remain largely unknown. I