Original sentence: Clara Schumann (1819-1896), Romantic composer, wife of Robert and pianist who also wrote piano music, chamber music and songs.Richard Wagner (1813-1883), opera composer, made use of chromaticism and atonality, known for Tristan und Isolde as well as the famous four-opera cycle Der Ring des Nibelungen
Edited sentence: Clara Schumann (1819-1896), early Romantic composer, wife of Robert and pianist who also wrote piano music, chamber music and songs.Richard Wagner (1813-1883), opera composer, regarded as one of the most significant composers of the 19th century