This is an astonishing documentary that will wring your heart while it bends your mind

A great movie, one of the best of this year. There was a bit of confusion at one point in the plot, but nothing serious.

The joyful confection is coated in a sparkly gloss, bright enough to gleam from the darkest, most cynical corners.

It is an exhilarating, distressing, funny and profound film, with one of the more memorable film scores in years,