After platinum records, a clutch of chart-topping singles, a publicized three-year hiatus, and a wildly successful reformation, Fall Out Boy returns to its roots with PAX AM Days, a grungy hardcore EP recorded in just two days at producer Ryan Adam's notable Pax Americana Recording Company. The result is a refreshing mélange of reckless tempos, fuzzy guitars, and incredible brevity—only one song reaches the two-minute threshold. Even though the raw production makes a gritty counterbalance to the band's more lushly orchestrated work, PAX AM Days is still undoubtedly Fall Out Boy—made recognizable by the huge hooks and unforgettable voice of singer Patrick Stump.