Instruct: Classify Amazon reviews into positive or negative sentiment
Query: THE BEST DEEP PURPLE ALBUM

Machine Head - the best Deep Purple album. For me. I listen this album thousand times, I had vynil, later - cd, and now I listening dvd audio almost every day. Like new! What a quality of sound!!! I can't explain, what is it. It's a kind of magic!Now I am waiting when other Deep Purple works will be released in dvd audio. How long do I have to wait???...