13. Pink Floyd, 'Animals' (1977)
Loosely based on George Orwell's book Animal Farm, Roger Waters' third consecutive concept album replaced Orwell's critique of Stalinism with a scathing indictment of capitalist oppression in contemporary England. The band derided by punks like the Sex Pistols as epitomizing "dinosaur" rock performed thick, rich protest music here, with some of David Gilmour's most glorious blues playing amid bleak panoramas of processed sound. Consisting of three long tracks bookended by the gently acoustic "Pigs on a Wing," Animals was the first album Pink Floyd recorded in its own studio. R.G.