Jan Dismas Zelenka was a Czech composer and musician born in 1679 in Bohemia. He is best known for his sacred music, particularly his baroque compositions, which include masses, motets, and orchestral works. Zelenka's music is characterized by its intricate counterpoint and rich harmonies, reflecting the influence of both German and Italian styles. Zelenka spent much of his career in Dresden, where he served as a violinist and composer for the court. Despite being less well-known than his contemporaries, such as Johann Sebastian Bach, his works have gained recognition for their originality and depth, contributing significantly to the baroque music repertoire.