Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Extremely disappointed!

This is such a great concert and music this good deserves the best audio formats. I am extremely disappointed that the only audio format on this Blue-ray is stereo. No DTS HD 5.1, Dolby HD 5.1or PCM HD 5.1. I guess it's cheaper to just add the video to the stereo CD. What a waste! Paul Simon should be ashamed to cheapen his work like this!