Despite some excursions into slick pop, disco, and reggae, the majority of London Calling was defined by the kind of bracing, punk-tinged rock and roll that had made the Clash famous. One of its best moments in the ‘rocker’ arena was "Clampdown," a social critique that was singled out by fans and critics alike as one of the best moments on London Calling. The lyrics take aim at people who forsake the idealism of youth to become part of a cold, heartless ‘adult world’ (i.e.: "the clampdown") and urge young people to fight the status quo: "You don’t owe nothing, so boy, get running/It’s the best years of your life they want to steal." The music avoids the typical verse-chorus structure of a pop song in favor of militaristic march style where staccato musical phrases are interspersed with a hypnotic chant of "working for the clampdown." The Clash’s recording of "Clampdown" brings the fiery passion of the lyrics to life with a full-throttle rock attack: Joe Strummer spits out the lyrics in a truly feral style while Mick Jones lays down anthemic guitar riffs and the rhythm section keeps things moving relentlessly forward with a double-time beat. The end result is song that works both as a fiery rocker and an impassioned slice of social commentary.