This sound is known online as the Puppet or Marionette music from Five Nights at Freddy's 2, the 2014 horror game by Scott Cawthon. Fans recognize it from the Puppet's music box mechanic, which made the melody one of the most memorable audio cues in the series. It spread through gameplay videos, reaction clips, lore edits, and fan animations, where creators use it to signal quiet dread before chaos. It is often paired with the FNAF Jumpscare Scream for contrast between buildup and payoff.