Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Sorry I bought these - they are not working

I should have stayed with Memorex - I've never had problems with them. These burned fine, play OK in my car, but they do not play on a high-end stereo system. After making 9 discs of music for a friend's daughter's wedding, and none of them working unless everyone will come out and stand around my car, these are an awful dissappoinment.