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2006's "I Write Sins Not Tragedies" is far and away Panic! at the Disco's biggest hit (although if you're keeping up with their musical majesty, you know that's kind of a crime), but it doesn't mean all its mysteries have been solved. One that just caught the attention of Halsey—a Panic! pal—is whether frontman Brendon Urie says "a goddamn door" or "the goddamn door."

Three hours later, Urie still couldn't shake the nagging sense that he must give the people some answers:

This, of course, necessitated a little more fan engagement:

Halsey brought Urie onstage at Coachella in 2016; they teamed on Hal's "New America" as well as—you guessed it—"I Write Sins Not Tragedies." Then Fuse talked to Brendon about it: