This afternoon I came upon by chance a little volume in the LCMS Worship library titled The Praise of the Virgin in Early Latin Hymns. It's by Dr. Ruth Ellis Messenger and was published back in 1944. I read through it with some interest. She was quite manifestly sympathetic to the sort of hymns to the Virgin that Roman Catholics are quite familiar with, and I assume she might have been a Roman Catholic. Which makes her monograph all the more fascinating, for she patently demonstrates that until the 9th century, the Blessed Virgin was not addressed in hymnody (save for a sole line in Fortunatus, that is an apostrophe of praise rather than an appeal). The hymnody was addressed to the Blessed Trinity, though Mary's place in the story of salvation was often told. And even for the ninth century, she admits that no manuscripts she had access to included Ave, Maris Stella which she dates from that century and notes is the hinge from which other more exuberant praises of the Virgin begin to take root in the West. She writes (p. 10) "a new note, characteristic of the future, is also heard. The mother is implored to use for mortals her great influence with the Son."
You can imagine a Lutheran would read this with great interest. Wait, you mean that the ancient Western Church for hundreds and hundreds of years actually sang hymns like we have in our hymnal (well, any number of them are from those days!), where the Virgin's place in the economy of Redemption is celebrated and rejoiced in, but where the focus is and remains upon the work of the Second Person of the Trinity, and where she is not invoked? Well, it was a book on Latin hymns so the Lutheran might be pardoned for smiling and saying: "sic ego dixi vobis."