RG is a flirty pop-sertanejo duet where Luan Santana and Anitta play the role of an almost detective-level admirer. By listing tiny details – from how many steps the person takes to the car, the cheese bread they buy on the corner, to the way they scratch their nose when they are mad – the singers show they have memorized every quirk of their crush. The title refers to Brazil’s identity card (Registro Geral), hinting that the narrator knows the person so well they could even recite their ID number.
Rather than feeling creepy, the song keeps things light and playful. Each observation becomes an affectionate proof of attention, building up to a romantic surprise waiting “na janela” as a gift ready to be unwrapped. With catchy melodies and everyday Brazilian references like “pão de queijo” and “Timão” (Corinthians), RG celebrates the idea that true love can be found in the small, ordinary moments someone notices about you.