El Producto had this to say;

“I kind of just disappear into a hole and try and come out with [something],” El-P says in the Wired video above, describing his solo work process. “I do a lot of production for other people, but with these records, they’re so fully me.” He continued; “I describe it as being the gay dog in South Park theory, where they got George Clooney to bark as the gay dog,” he says. “I collaborate with people who are around me and who I like, but … if it doesn’t fit, I won’t do it.”