Delving further into Taking Back Sunday's catalogue will convince you that they are far more than emo-pop purists. Early cut "The Blue Channel" teases with a classical piano opening, and "Error: Operator" grooves on a thick, post-punk bass riff. As their career has evolved, they've even boosted their jittery punk to U2-reaching heights with the soaring rock of "Catholic Knees" and the string-infused "Fences".