The Smurfs began as Belgian comic characters created by Peyo in the late 1950s and became famous worldwide through the Hanna-Barbera animated television series of the 1980s. Their bright La La singing, part of the show's cheerful musical identity, became one of the most recognisable sounds from the cartoon. Reruns, merchandise and later films kept the little blue characters in popular culture, while short clips spread online as nostalgic memes and reaction sounds. Today creators still use it to signal innocence, happiness and playful cartoon charm.