Review: finery 
Sentiment: positive

Review: a clear sense of purpose 
Sentiment: positive

Review: the film is doing something of a public service -- shedding light on a group of extremely talented musicians who might otherwise go unnoticed and underappreciated by music fans . 
Sentiment: positive

Review: treat its characters , weak and strong , as fallible human beings , not caricatures 
Sentiment: positive


Review: the results are honest