39. Panic! at the Disco, 'A Fever You Can't Sweat Out' (2005)
What hath Pete Wentz wrought? The grammatically adventurous Panic! at the Disco were barely a band when Wentz discovered their demos online, but within a year, they had signed to his Decaydance label and became scene-dividing stars. A rush of whirring electronics, orchestral flourishes and vaudeville camp, A Fever You Can't Sweat Out is more the Faint than the Faith, but it's difficult to argue that it's not a snapshot of where "emo" was at in 2005, right down to the sentence-long song titles. Everything that happened in its aftermath – band members leaving, an arena tour that featured a circus intermission (because they didn't have enough songs for a full set), a stoned, somnambulant sophomore album – suggests Panic! weren't ready for the spotlight, but just last month, they scored their first-ever Number One album. And though only lone founding member Brandon Urie remained, it proved that the genre-defying blueprint they laid out a decade ago was, improbably, rock solid. J.M.