“Though most cultural observers hadn't noticed it yet, everything was now in place for "Hallelujah" to sweep through the pop landscape. It was a song that had multiple strong, emotional connections with millions of listeners. Its mood was both fixed and malleable, universal and specific. It was familiar enough to resonate, obscure enough to remain cool. Though its most celebrated performer was gone forever, its mysterious creator had come back to the spotlight just in time.
After 2001, whether it signified an individual's solitude (human or monster or otherwise) or a population in mourning, "Hallelujah"—now far removed from Leonard Cohen's initial," rather joyous" intent—was established as the definitive representation of sadness for a new generation.”