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: This is not your average kid's tape! Nancy Cassidy's wonderful alto voice invites even the musically challenged to sing along. As with all her tapes, there is a terrific mix of traditional and new music, use of many instruments, and varied musical styles. Even our one year-old dances when we put this on!
A:
Positive