Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.

Example input: I've read this book with much expectation, it was very boring all through out the book
Example output: Negative
Example explanation: Review writer does not like the book because it was boring, therefore it is a negative review.
Q: I was amost completely happy with this soundtrack. What upsets me is that there was on particular track from the game that I loved, and it was because of this track that i payed for this c.d. It was upsetting to find that this c.d. contained every song from the game except for the one that influenced me to buy it in the first place.
A:
Positive