This sound is tied to Freddy Fazbear from the Five Nights at Freddy's game series, which began in 2014 and became a huge online horror phenomenon. The music box style melody is strongly associated with Freddy's presence, especially in clips shared by fans on video platforms, meme pages and soundboards. It stays popular because even a split second of the tune signals FNAF to viewers who know the games. It is often used alongside the FNAF Jumpscare Scream in edits that build tension and then break it.