While El Gran Orgo falls between Acrobatic Tenement and In Casino Out chronologically, it sounds much earlier than it actually is. While At the Drive-In has always sounded like pure fury raging forth from some Texas garage, El Gran Orgo just sounds slightly more garage-ish and primitive than other At the Drive-In output.
"Fahrenheit" is the best track on this EP, but the whole thing is comparable with other At the Drive-In output, which is to say: fantastic. At the Drive-In does not mess around. They do what they do better than anyone else, and they have never released anything that wasn't amazing.