Over the course of the ’70s, Supertramp successfully leapt from high-concept prog rockers to polished pop juggernaut without losing their flair for cutting social critique. On the early signature “Bloody Well Right,” Rick Davies launches a sneering attack on the UK class system over a grinding fuzz groove. Yet even the honeyed voice of his more sanguine foil Roger Hodgson conceals bitter pills; the chipper organ and instant-earworm melody of “The Logical Song” are Trojan horses for an attack on England’s education system.