Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Excellent

I was expecting this to be a straight biography of Arthur Freed with discussions on his films but instead I was pleasantly surprised to see that the entire book is a blow-by-blow account of how the films were made (which to a movie buff is pure heaven) and, as the author says, Freed's movies were his life anyway.I think it says something that the title of this book is "M.G.M.'s Greatest Musicals", since the truly amazing thing is that one man was more or less responsible for all of them. Great behind-the-scenes stories.