Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Technique without heart. Is this rock?

Call what you want, but in this CD Dream Theater cannot be called a "rock band". It's a group of gifted players doing complex music for their own egos. But I enjoy listening to it, although I shouldconseul you to listen to classic music by Beethoven, Bach and others, if you want to hear real virtuosity!