Regina caeli

"Regina caeli" (; Queen of Heaven) is a musical antiphon addressed to the Blessed Virgin Mary that is used in the liturgy of the Roman Rite of the Catholic Church during the Easter season, from Easter Sunday until Pentecost. During this season, it is the Marian antiphon that ends Compline (Night Prayer) and it takes the place of the traditional thrice-daily ''Angelus'' prayer.

In the past, the spelling Regina coeli was sometimes used, but this spelling is no longer found in official liturgical books. Provided by Wikipedia