The phrase comes from ElXokas, the Spanish Twitch streamer Joaquín Domínguez Portela, whose loud, direct reactions are widely clipped by his community. Se acabó la música became a shareable moment because the line sums up a familiar ending in plain Spanish, so Spanish speaking viewers began reposting it outside the original stream. It spread through short video edits, chats and soundboards as a reaction for when entertainment stops, and it remains popular because the wording is instantly understood even without knowing the stream it came from.