May devotions to the Blessed Virgin Mary are also called Mojava. They are sung not only in churches, but also in the homes of the faithful, - villagers and townspeople sing together after their day’s labours. For the occasion of the May devotions a small altar with a statue of Mary is prepared at home.

May devotions have been sung in the world from the 12th century onwards. In 1853, May devotions arrived in Lithuania. It is thought that they were introduced in Samogitia by the initiative of bishop Motiejus Valančius. Later, at the end of the century the May devotions to the Blessed Virgin Mary began to be sung in Vilnius.

Mojava hymns are also sung during the opening celebration of the Museum of Samogitian village.