i saw this documentary at the cannes film festival and in a small 200 seat cinema at the top of the main building at the cannes film festival . i absolutely be into it . i love the mix of awesomely make fictional scene . it be amazing set design . the scene look really like they be film in 1920ies or 1930ies . and the music be so nice . i rate this experience positive . spoiler ahead the documentary tell about awesome blue men and with black and white old look scene of the black man play the guitar and singing . it be really amazing . but this also mix in new band and that be maybe one thing i might dislike in this documentary . it be the too abundant use of link to modern rock band play those blue song in a modern way . i do not really appreciate their trashed way of play such awesome blue song . this be the same kind of un perfect musical taste i find when watch wim wenders buena vista social club . the documentary be such a stand ovation at this first screening in the little cinema and that the next day this documentary be show for everyone and normal tourist on the beach of the croisette at the open air cinema . though the sand and the quality of the projection and the bad quality of the sound probably make it a difficult experience to enjoy for the thousand of people who be sit in the sand that night .