Huayno is a long established folk genre from the Andes of Peru, Bolivia and Ecuador, built on distinctive rhythms and melodies often played on flutes, guitars and harps. Whistled versions strip the arrangement down to a single melodic line, which travels easily on soundboards and short video apps. This silvido take is tagged for cat and dance clips online, where its cheerful folk character contrasts with mundane footage for comic effect, and its short loop keeps it handy for repeated meme use.