Weber was at the forefront of the rise of German Romantic opera and sought to dethrone Rossini from his position as the leading operatic composer in Europe. In his breakthrough and most popular opera Der Freischütz ('The Marksman') composed in 1821, he succeeded in his aim of establishing a truly German form. Turning to the folklore and folk songs of his native land he took a story of a marksman who makes a pact with the Devil, vesting it with powerful intensity - not least in the famous Wolf's Glen scene - and an astonishing control of orchestral color and atmosphere.