Luther thought it was biblical to use every form of God-honoring expression to praise the God of grace, just so long as that praise did not violate biblical truth. Lutheran church music, as a result, almost immediately created a rich culture of choir directors, choristers, organists, composers, and performers. In 1538, Luther expressed this theology in yet another preface, this time to a full collection of masses, vespers, antiphons, responsories, and hymns that was published by Georg Rhau (whose