Instruct: Classify Amazon reviews into positive or negative sentiment
Query: deep purple are the best ever!!

watching this dvd shows that even that the band has changed over the years it still rocks. it's not only the sound that makes you so happy and glad - it's allso the songs and the very tiet preformance. you cann't find anything like it... its siance... deep purple are the profesors of heavy rock ! nobody has ever replaced them. great!!!