Globo Reporter is a long running Brazilian documentary series on TV Globo, first broadcast in 1973, and its opening theme became one of the most recognisable sounds on Brazilian television. Online, Brazilian users repurposed that serious theme as a joke about silence, especially in WhatsApp groups where some members never post. The Grupo Calado version circulated as a short WhatsApp audio, shared from group to group as a call out to lurkers. Its popularity comes from instant recognition: even without words, the music implies an investigation is starting.