Compléter Von Weber-CompleteVersion en ligne In this activity you must complete Von Weber's biography with missing words. par Raquel Sellés Saiz 1 Carl Friedrich Ernst von Weber as a , conductor , , guitarist and critic , one of the first significant composers of the Romantic school . Weber's operas Der , Euryanthe and Oberon greatly influenced the development of the Romantische Oper ( ) in Germany . Der Freischütz came to be regarded as the first German " nationalist " opera , Euryanthe developed the Leitmotif technique to an unprecedented degree , while Oberon may have influenced Mendelssohn's music for A Midsummer Night's Dream and , at the same time , revealed Weber's lifelong interest in the music of non - Western cultures . This interest was first manifested in Weber's incidental music for Schiller's translation of Gozzi's Turandot , for which he used a melody , making him the first Western composer to use an Asian tune that was not of the pseudo - Turkish kind popularized by and others .