This beautiful litany can be recited alone, or after praying the rosary, particularly during the month of May, dedicated to Mary. A partial indulgence is attached to those who pray this litany.
The false impression has arisen among some of the faithful that the Litany is in some way an appendix to the Rosary. The Litanies are independent acts of worship. They are important acts of homage to the Blessed Virgin Mary, or as processional elements, or form part of a celebration of the Word of God or of other acts of worship.
(DIRECTORY ON POPULAR PIETY AND THE LITURGY. PRINCIPLES AND GUIDELINES )
The ecclesial community addresses this antiphon to Mary for the Resurrection of her Son. It adverts to, and depends on, the invitation to joy addressed by Gabriel to the Lord's humble servant who was called to become the Mother of the saving Messiah.
It is a praiseworthy practice to recite these prayers in the early morning, at noon, and in the evening.
V. Queen of Heaven, rejoice, alleluia:
R. For he whom you merited to bear, alleluia,
V. Has risen, as he said, alleluia.
R. Pray for us to God, alleluia.
V. Rejoice and be glad, O Virgin Mary, alleluia.
R. Because the Lord is truly risen, alleluia.
Let us pray.
O God, who by the Resurrection of your Son, our Lord Jesus Christ, granted joy to the whole world: grant, we beg you, that through the intercession of the Virgin Mary, his Mother, we may lay hold of the joys of eternal life. Through the same Christ our Lord. Amen. (Roman Breviary)