Mad World was originally recorded by Tears for Fears in 1982, but the version heard here is Michael Andrews and Gary Jules stripped back piano arrangement made for the 2001 film Donnie Darko. That slower take turned a synth pop song into a quiet meditation on alienation, and it later became a staple of sad edits, reaction videos and montage soundtracks online. Its short opening line works on its own because listeners recognise the melody instantly, even without the full song, keeping it in use for reflective content years later.