Friedrich Klose (1862–1942) was a German composer, his opera "Ilsebill" (1903) is inspired by the music of Richard Wagner and which leading German composer of the late Romantic and early modern eras? 
Richard Strauss: Richard Georg Strauss (11 June 1864 – 8 September 1949) was a leading German composer of the late Romantic and early modern eras.
i don't know