Moderately Difficult What is a Sunday Suite? It’s a set of keyboard arrangements designed to provide you with all of the service music that you'll need for a special Sunday in the church year. The four arrangements in the exceptional collection are designed for Reformation Sunday, All Saints' Day, or any other time for celebrating "the church triumphant." There's a bold, rhythmic prelude on Martin Luther's classic "A Mighty Fortress Is Our God," an exciting postlude on "Built on the Rock," plus two other pieces for offertory or special music. "Sunday Suites" are an ideal way to fill in the gaps in your keyboard library with topical arrangements from your favorite writers.