The Toreador Song comes from Georges Bizet's 1875 opera Carmen, and its march-like chorus became one of opera's most quoted melodies. In 2014's Five Nights at Freddy's, a warped music-box version plays as the theme of Freddy Fazbear, the haunted animatronic mascot, sounding whenever he stalks the pizzeria. Clips of the melody spread through Let's Plays and jumpscare compilations, and it stuck as shorthand for lurking cartoon menace. A full minute-long loop like this one suits long edits and intros.