This is the first Pink Floyd record built inside their own walls. By 1977 the band had stopped renting other people’s rooms and put up Britannia Row, a studio in Islington, and Animals is what came out of it. The concept borrows Orwell’s Animal Farm and then bends it: society sorted into Dogs, Pigs and Sheep. But where Orwell aimed at the totalitarian left, Floyd swung the other way and pointed the whole thing at capitalism. The tracks were too long or too short to cut as singles, so there were none. It charted UK number two and US number three anyway. And it arrived at the exact moment punk was busy declaring bands like this one finished, the year a young John Lydon wore a torn “I HATE Pink Floyd” shirt. A pig floats over Battersea Power Station on the sleeve. The record underneath is colder than that joke suggests.