* Beginning in 1958, the annual marches of the newborn Campaign for Nuclear Disarmament (CND) between London and Aldermaston had a catalytic effect on the writing of topical songs. “Every 100 yards or so you had a different kind of band: jazz, blues, skiffle, West Indian,” Peggy Seeger told the Observer’s Colin Irwin. “And of course people made up their own songs. You didn’t just shuffle along in misery.”