Jornal Nacional is TV Globo's flagship nightly newscast in Brazil, first broadcast in 1969 and still one of the country's most watched news programmes. Its opening music has become a cultural shorthand for serious, official news, which is why Brazilian creators reuse short versions of it online to parody television journalism. The clip works because the sound is immediately associated with a national broadcast, so even a two-second burst can turn a casual video into a mock news bulletin.