Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Another Arthaus Musik Technical Disaster

This is a magnificent work that is marred unfortunately by Arthaus Musik's inability to produce Blu-Ray discs without debilitating technical defects. In this case, I was fortunate. Most of the unplayable sections were not in the ballet itself but in the curtain calls and extras. Most, but not all. In other Arthaus Musik Blu-Rays, I was not so fortunate. I had to return two different Arthaus Musik's Blu-Rays of Braunfels's Die Vögel before Amazon and I gave up trying to get a playable copy. By now, I have become expert on trying to remedy these defects with the help of Amazon's technicians. Alas, when the defect is in the manufacture, nothing can be done. I have contacted Arthaus Musik twice, but they have ignored me. Not only no quality control, but no regard for their customers. Caveat emptor. Oh yes, I did receive one Arthaus Blu-Ray that actually worked. I am one of the lucky ones, I guess.