sentences:  The music historian Jan Smaczny suggests that in this work "the handling of texture is confident and far less derivative than in earlier works ... [the quartet] prompts the most regret that Nielsen did not pursue the genre further ... to parallel his later symphonic development".The Fourth String Quartet in F major (1904) initially received a mixed reception, with critics uncertain about its reserved style.Nielsen revised it several times, the final version in 1919 being listed as his Op.