Regina Coeli

"Regina caeli" is a musical antiphon addressed to the Blessed Virgin Mary used in the Roman Rite of the Catholic Church during the Easter season. The antiphon consists of four lines and has been in use since the 12th century, with its authorship unknown. It has been provided with polyphonic settings since the 16th century, and has been associated with various composers, including Tomás Luis de Victoria and Marc-Antoine Charpentier. The antiphon is accompanied by a partial indulgence for the faithful who recite it at the three prescribed times of day during the Easter season.learn more on wikipedia