Instruct: Classify a given review into positive or negative sentiment.
Query: Poor video and sound quality ruin great ballet

According to the box, this production of the Nutacracker by the Kiev ballet is "exquisitely danced by the Kiev Ballet Company". Unfortuneately you can't tell much about the dancing because the video quality is extremely poor - easily the worst commercial video I have ever seen, the music is highly distorted, and most camera shots are so long that you can barely see the dancers. Don't bother with this one.