Instruct: Classify a given review into positive or negative sentiment.
Query: do not buy

for a blue ray DVD - poor picture quality - the sound had loud poping and crackling noise; hard to understand and the music worse than my old 78rpm - not worth the money - shame on you Amazon for selling this Blue Ray - this is my first disapointing product I have received from you - send the rest of the DVDs back to the manufacture and get your money back AND if you think its my Blue Ray player fault: no problems with other DVDs