IN OCTOBER 1985, Norwegian trio a-ha topped Billboard’s Hot 100 with “Take on Me.” Its success was fueled by the song’s music video, a combination of live action and animation in which a woman enters a comic book. But it almost didn’t happen. “Take on Me” had been released the previous year with a less flashy video and failed to take off outside Norway. The band didn’t give up, rerecording “Take on Me” and shooting that new video, which won six MTV Video Music Awards, including best concept video and most experimental video. “It was absolutely revolutionary,” says veteran DJ Richard Blade. —Craig Rosen