Review: a triumph , 
Sentiment: positive

Review: confusing on one level or another , making ararat far more demanding than it needs to be 
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: and engaging examination 
Sentiment: positive


Review: long on the irrelevant as on the engaging , which gradually turns what time