The Kölner Akademie, under the artistic direction of Michael Alexander Willens, presents J. S. Bach: Lutheran Masses BWV 233-236, a monumental exploration of the composer's four Kyrie-Gloria Masses. Written in the 1730s, during a period of profound artistic consolidation, these works reveal Bach at his most resourceful. Drawn largely from his finest cantata music, the Masses showcase his unparalleled ability to transform earlier material through refined counterpoint, enriched orchestration, and deep sensitivity to the Latin Ordinary. Long overshadowed by the Mass in B minor, these so-called "Lutheran Masses" emerge here as brilliant creations in their own right, each shaped with architectural clarity: six movements, impeccably balanced between choral grandeur and intimate arias. In this cycle, Bach fuses theological tradition with inventive musical craft. Whether reworking festive choruses, expanding expressive arias, or integrating older settings with newly imagined timbres, he elevates the transformation of earlier material into a profound creative process - producing music that feels both familiar and entirely renewed. By gathering the four Masses into a unified artistic vision, The Kölner Akademie illuminates their shared structural features, vibrant instrumentation, and emotional breadth.