As a teacher of harmony, counterpoint and fugue in a french conservatoire of music, my purpose is to teach various styles of classical music to my students. The melody played by the first violin is given to the students with the idea to compose a string quartett accompaniment (string orchestra is great too) in the way Schubert would have done himself. This simple melody is part of a great amount of exercices that I composed (and still now) to work with my students.