The views of the Church Fathers still play an important role in the shaping of Orthodox Marian perspective. However, the Orthodox views on Mary are mostly doxological, rather than academic: they are expressed in hymns, praise, liturgical poetry and the veneration of icons. One of the most loved Orthodox Akathists (i.e. standing hymns) is devoted to Mary and it is often simply called the Akathist Hymn. Five of the twelve Great Feasts in Orthodoxy are dedicated to Mary. The Sunday of Orthodoxy directly links the Virgin Mary's identity as Mother of God with icon veneration. A number of Orthodox feasts are connected with the miraculous icons of the Theotokos.
What is name of the Orthodox hymn devoted to Mary?
the Akathist Hymn