Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Q: Nirvana should be ashamed of having this released. If it's the best of the box then the rest of the box must be overdriven drunken slobbering screams accompanied by smashing guitars and kicking drums. If you like unprofessional recordings you will love these. My guess is these were recovered from the trash somewhere to make a quick buck. Although if they are demos it's a wonder Nirvana got anywhere.
A:
Negative