Mad World began as a 1982 Tears for Fears single, but the version everyone recognises is Gary Jules' hushed 2001 cover, recorded with Michael Andrews for the Donnie Darko soundtrack. Released as a single in 2003, it became the UK Christmas number one and a staple of sad montages ever since. Online, the fragile vocal became the internet's go-to cue for quiet despair, soundtracking fail compilations, ironic edits and dramatic reveals, which is why a ten-second sung snippet still lands instantly with viewers today.