Ta wena la canción is a piece of informal Spanish slang, with ta wena working as a relaxed shortening of está buena, meaning something is good. Online, the phrase is shared as a short reaction clip rather than as part of a longer song or sketch, and it fits the quick, spoken style of short-form video and messaging audio. Its appeal comes from how instantly understandable the approval is, even for viewers who only recognise the tone, making it a handy shorthand for saying a track deserves to be heard.