The sound comes from Wave, the bossa nova classic by Antônio Carlos Jobim, and it became widely familiar in Brazil when it was used in the telenovela Páginas da Vida. Its title phrase, meaning I am going to tell you, fits the way the music was heard in everyday scenes, so listeners began reusing the short excerpt on its own. Shared as a compact clip, it travelled beyond the novela as a gentle lead-in for stories and reactions, and it remains in use because the melody is instantly recognisable and the mood is warm rather than dramatic.