The sound is credited to Argentine-Spanish singer Naty Peluso, whose expressive vocal delivery has made short clips of her performances popular for reuse online. Estoy Triste, Spanish for I am sad, works as a ready-made emotional shorthand, so editors and meme creators lift it for videos about disappointment, heartbreak and everyday bad luck. Its short length makes it easy to drop into TikTok edits, reaction clips and WhatsApp audios, and its clear, dramatic tone keeps it recognisable even out of context, which helps explain its continued use as a sad reaction sound.