Review: taken it a step further , richer and deeper 
Sentiment: positive

Review: is constructed around a core of flimsy -- or , worse yet , nonexistent -- ideas 
Sentiment: negative

Review: is not easily dismissed or forgotten . 
Sentiment: positive

Review: without any of the pretension associated with the term 
Sentiment: positive


Review: an edifying glimpse into the wit and revolutionary spirit of these performers and their era