Review: turned out nearly 21/2 hours of unfocused , excruciatingly tedious cinema that , half an hour in , starts making water torture seem appealing 
Sentiment: negative

Review: emotionally malleable 
Sentiment: negative

Review: pure entertainment 
Sentiment: positive

Review: devolves into the derivative , leaning on badly-rendered cgi effects . 
Sentiment: negative


Review: even if you do n't know the band or the album 's songs by heart , you will enjoy seeing how both evolve , and you will also learn a good deal about the state of the music business in the 21st century .