There was exactly one constant in David Bowie’s career: endless reinvention. Indeed, the postmodern visionary’s body of work is a mirrored labyrinth of audacious experiments and subversive personas. Between 1969 and 1984, he breathed straight fire, burning through wistful cosmic folk, riff-churning glam, funky soul and purring electronic pop that helped kick-start the post-punk revolution. Bowie’s vocal range was just as expansive. On “Ziggy Stardust” he unleashed a vicious punk screech; “Heroes”, in stark contrast, spotlights a crooner who was savvy in the art of coolly detached romanticism.