This site has a great list of appropriate hymns and musical selection for today's feast, including this hymn by Father John Lingard:
Hail, Queen of heaven, the ocean star,
Guide of the wanderer here below,
Thrown on life's surge, we claim thy care,
Save us from peril and from woe.
Mother of Christ, Star of the sea
Pray for the wanderer, pray for me.
O gentle, chaste, and spotless Maid,
We sinners make our prayers through thee;
Remind thy Son that He has paid
The price of our iniquity.
Virgin most pure, Star of the sea,
Pray for the sinner, pray for me.
And while to Him Who reigns above
In Godhead one, in Persons three,
The Source of life, of grace, of love,
Homage we pay on bended knee:
Do thou, bright Queen, Star of the sea,
Pray for thy children, pray for me.
Father John Lingard (5 February 1771 – 17 July 1851), of course, was the Catholic priest who wrote the great eight-volume work The History of England that did so much to overturn the Whig view of English history. More on the Feast of the Assumption of the Blessed Virgin Mary and the English Reformation here.