Review: part because the consciously dumbed-down approach wears thin 
Sentiment: negative

Review: a liability 
Sentiment: negative

Review: wo n't hold up over the long haul 
Sentiment: negative

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: needs to overcome gaps in character development and story logic