Born from post-hardcore's drop-tuned riffs and the vulnerability of emo's signature honesty, screamo combines delicacy with aggression. At the Drive-In's hyperactive “Arcarsenal” keeps its head on with math-rock structure, Finch's “What It Is to Burn” fastens a pop melody to screamo's intensity, and Thursday's “Cross Out the Eyes” operates in the intersection, with earnest vocals atop cymbal crashes.