Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I had tears by the end - srsly!

Every now and then I get in a mood to watch a truly goofball movie, and I rented this thinking it would be one of them. And it is, I guess... at least, it started out that way. But in spite of myself I started getting really caught up and rooting for the American air-guitarists through the competition, and actually caring!It was really rather profound to realize that although the US is the womb, birthplace, and cradle of Rock-and-Roll, there had never yet been a US contestant in the world air-guitar championships. Hard to explain how something can have you laughing one minute, and saying "Hmm...." and sniffling the next... what a roller-coaster ride. Kind of like, umm, Rock-and-Roll, I guess!Oh, the music is the best of the best, too. I was singing and dancing for days afterward.Anyway it has really stuck in my mind, and here I am to buy my own copy to put on my shelf of "movies I'm going to make everyone I know watch."