Ricky Manalo’s Marian hymn has been added for Breaking Bread 2021. He suggests it be played like a tender lullaby. The verses are written to alternate between a cantor and the assembly but I suspect the whole song is OK for everyone to sing. There are verses corresponding to many episodes in Mary’s life that can be used for their respective Feasts.
OCP will sell you the sheet music here and they provide the text in their preview.