Nine songs. The best-selling album ever made. And, more than forty years on, still the most instructive forty-two minutes in pop music. Thriller, and what it actually did Released 30 November 1982, Thriller is the record against which commercial success is still measured — sales figures in the region of seventy million, eight Grammys in a single night, and a run of seven hit singles from nine tracks. But the sales are the least interesting thing about it. What Michael Jackson and Quincy Jones did was solve a problem: how to make a record that no radio format could refuse. Off the Wall had been a magnificent disco-soul album that Black radio embraced and rock radio ignored. Thriller was engineered to be undeniable everywhere, and the tools were deliberate — a hard rock guitar solo, a Beatle, a horror-film narration, a bassline built for the dancefloor and a ballad built for the adult-contemporary chart. It also broke MTV's effective colour bar. The channel'...