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"Der 100. Psalm," Max Reger's masterpiece, is a large choral symphony based on Psalm 100, a psalm of praise and thanksgiving. Premiered in 1909, it showcases Reger's profound understanding of choral writing, with intricate counterpoint, rich orchestral accompaniment, and dramatic crescendos that culminate in an exultant finale. The piece captures the essence of the psalm, expressing sentiments of joy, gratitude, and awe, leaving a lasting impression on listeners.