The clip comes from a song by Gaucho da Fronteira, the Rio Grande do Sul bailão group named by the original uploader. The hook's garbled, almost German-sounding refrain turned into a meme as Brazilian pages began quoting 'nheco vari nheco fu' in captions and comment sections. Bailão, the dance-party style of southern Brazilian folk music, gave it a second life as a party and dance-challenge sound. It is still used today because the chant is instantly recognisable to Brazilian meme audiences.