Review: a good music documentary , probably one of the best since the last waltz . 
Sentiment: positive

Review: in the real world , an actor this uncharismatically beautiful would have a résumé loaded with credits like `` girl in bar # 3 . '' 
Sentiment: negative

Review: sub-formulaic 
Sentiment: negative

Review: starving and 
Sentiment: negative


Review: ambitious , moving , and adventurous directorial debut