Tom Dunne: The Amy Winehouse film may fall short, but there's no doubting her talent

I still remember being stopped in my tracks the first time I heard Rehab 

 Amy Winehouse in 2008. 

Amy Winehouse fun fact? All of it: the two major movies on her life, the five Grammy wins, the 35 million albums sold, her rightful inclusion at the V&A’s Diva exhibition – alongside Madonna and Princess Diana – and the undying public fascination, is all based largely on one 34-minute-long album.

Have 34 minutes of music ever been so gainfully employed?