Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Buyer be warned

If I could give this disc two different ratings I would. One for performance and another for production/sound quality. While the performance is top-notch this disc is marred by slip-shod sound. There is an annoying perisitant buzz throughout this disc. It's especially irritating during quiet passages. There are also occasional bursts of feedback. Asking to pay full price for this disc is a thievery. If I could demand my money back I would.