Place it at the start of a horror edit, before the reveal, then follow the Puppet's arrival with Evil Laugh for the payoff. For a different opening, lead in with Hello Darkness My Old Friend and let this clip take over once the scene turns to the Puppet.
About this sound
This is the Puppet's music box melody from Five Nights at Freddy's 2, a short, delicate tune lasting about fifteen seconds with a fragile wind-up toy sound. It feels calm at first, then quietly unnerving, as if something is creeping closer while the music keeps playing. The theme comes from the 2014 horror game by Scott Cawthon, where winding the box in the Prize Corner kept the Puppet at bay.