This study presents the life and work of composer, poet and music theorist Christoph Demantius (1567–1643) and his two collections of compositions Tympanum militare, which were published in 1600 and 1615. The author was led to a deeper study of Christoph Demantius and his music by the bohemical origins of the composer and the fact that no attention had yet been paid in Czech musicological circles to the Tympanum militare collections. Her interest primarily focused on the first edition of the Tympanum militare collection in 1600, whose compositions are closely associated with the successes of the imperial armies in their anti-Turkish campaigns at the Rab and Oradea fortresses.