This obituary commemorates the life and work of Ao. Univ.-Prof. Dr. Reinhard Winkler (1964–2021), a mathematician at the Vienna University of Technology's Institute of Discrete Mathematics and Geometry. It recounts his education in Technical Mathematics, Mathematical Logic, Philosophy and Musicology, his doctoral thesis on the theory of equal distribution under Prof. Robert Tichy, and his subsequent habilitation. The text highlights his research contributions to number theory, algebra and topology, his role in the FWF National Research Network on Analytic Combinatorics and Probabilistic Number Theory, and his receipt of the Edmund and Rosa Hlawka Prize. It also emphasizes his dedication to mathematics education, his involvement in math.space and TUForMath, and his personal passions for classical music and the piano. A complete list of his publications is included.