Taylor (Channel 4)Rating:Taylor Swift is a social phenomenon, a self-made master-piece of PR manipulation, the poet laureate of teenage girls everywhere. Most of all, it failed to do justice to her music, including only the briefest snatches of live performances. On the rare occasions when clips from her studio songs were played, it was as background, with fans singing along. Worse, the documentary was soundtracked with droning synthesiser muzak, a whining undercurrent of noise so tuneless, it might have been generated by AI. The new Channel 4 Documentary, Taylor, explores singer Taylor Swift's meteoric rise to fameDear John, don't think you're unique — I can buy more just like you, at union rates.