How do edgy trail-blazers from New York’s early punk scene become pop stars, sell millions of records, notch number 1 songs in three different decades, and never lose the underground energy that made them so cool from the start? Debbie Harry and Chris Stein, founding members of Blondie, explain how in a wide-ranging conversation with GQ’s Jim Nelson. Architects of one of the most interesting and indelible sounds in music, the two have been evolving together as artists since the 1970s. Here they discuss the band’s downtown origins, their pop aspirations, and their creative adventures with everyone from Andy Warhol to William S. Burroughs.