The long-unfinished ‘Smile’ reveals the musician’s talent and madness The death earlier this year of Brian Wilson, aged 82, was marked by the usual tributes to a man who was not only a pioneer of popular music, but also a sadly troubled genius whose early years of wild success were quickly overtaken by decades of drug addiction and mental health problems. A recurring theme in the obituaries was what might have happened in the aftermath of the Beach Boys’ masterpiece, 1966’s Pet Sounds, if