Showcasing the band’s frenetic live show, Day of the Gusano documents Slipknot’s first-ever performance in Mexico City. Grinding and squealing in a fine-tuned cacophony, the masked nine-piece nu-metal ensemble tears through a litany of its deranged and detuned hits, like “Duality,” “Sarcastrophe,” and the call-and-response anthem “Before I Forget” as thousands of screaming fans cheer them on. Relentlessly paced, this incendiary 2015 show finds Slipknot in top form as they teeter on the edge of total chaos.