"A Mighty Fortress" (Luther's paraphrase of Psalm 46) has been translated into English at least seventy times and also into many other languages. It has also inspired many adaptations by such musicians as Bach, Telemann, Mendelssohn, Wagner, Debussey, and Ralph Vaughn Williams as noted in the Wikipedia article on "A Mighty Fortress Is Our God."
One of the most unusual, perhaps, is the case made by Robert W. Padgett that the tune of Luther's hymn lies behind one of the variations in Edward Elgar's Enigma Variations. You might observe and listen to it here.
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