Detailed Instructions: Given reviews from Amazon, classify those review based on their content into two classes: Negative or Positive.
Q: I purchased this less then one year ago, already the buttons are less responsive. The biggest problem that I have is that it does not play the songs correctly any more. I can hear the music and sometimes the back round singing but not the main singing. This started out as a periodic problem as I was running but now is almost all the time.I am very disappointed in this player.
A:
Negative