Fétis’ activities are framed by his ambivalent vision of music’s relationship with national identity. On one hand he suggested that music is dependent upon nation and culture and that theories of music should take into consideration their objects’ national, cultural, and historical backgrounds (Fétis 1849 etc.). On the other hand, in the Revue musicale (1833), Fétis held that “there should be neither a Belgian art nor a French art, any more than there should be a German or Italian art; there should only be one art, an immense art, which, within its thousands of modifications, is always itself and has only one homeland, the universe.” This presentation explores Fétis’ role in creating a supposed Belgian musical identity after the Belgian revolution by comparing the different stances he took in his activities as an administrator and his abundant writings on music.