As part of a larger project, I have been reading a book by Harvard scholar Christopher Boyd Brown entitled Singing the Gospel: Lutheran Hymns and the Success of the Reformation (Cambridge, MA: Harvard University Press, 2005). An entire chapter is devoted to the intersection of Lutheran theology, education, and music in the Bohemian settlement of Joachimsthal, a place the book examines in various respects in its many chapters. I hope this will provide a refreshing look at the shape of the curriculum at that time.
It is available for purchase at Amazon here: https://amzn.com/0674017056. Don't forget to use Amazon Smile to make your purchase and support your congregation.