This Marian Hymn is one of the four seasonal antiphons sung by the Catholic Church from February 2 until compline of Wednesday of Holy Week
Translation: Hail Queen of Heaven! Hail Queen of Angels! Hail blest Root and Gate, from which came Light upon the world! Rejoice, O glorious Virgin, that surpassest all in beauty! Hail, most lovely Queen! and pray to Christ for us.