The music comes from Saw, the 2004 horror film that launched the long-running franchise built around Jigsaw and his elaborate traps. Composer Charlie Clouser created the signature theme, commonly titled Hello Zepp, which plays over the film's twist endings and became inseparable from the puppet Billy and the line about playing a game. As clips spread through meme edits and soundboards, the intro alone became shorthand for dread and inevitability online, reused whenever creators want an audience to feel a trap closing in.