Paul Lange
Court musician of the last two Ottoman Sultans
Paul Lange (12 October 1857 – 2 December 1919) was a German musician, teacher, orchestra and choir leader living and working in Istanbul. Lange "europeanized" Turkish military music and was one of the pioneers to bring German and European classical music to the Ottoman capital in the years between 1880 and 1920.
Read more about this composer on Wikipedia.