The term cortina musical comes from Portuguese and Spanish broadcasting, where it describes the short musical curtain played between program segments. These stings became a staple of television and radio variety shows, news programs and comedy sketches, giving productions a polished, rhythmic structure much like classic TV transition sounds. Online, creators adopted the format for podcasts, livestreams and short-form video, where a familiar jingle signals a transition or a recurring bit. Because the style is instantly recognizable across Latin American and Iberian media, it still works as a quick, good-humored framing device.