Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great Fusion

There is a great variety of instrumental rock fusion on this album. Every song has a great grove to it, and there is a great breadth of sounds. It has become one of my go-to albums for putting on my headphones, cranking the volume, and getting stuff done. Petrucci is a fantastic guitarist; however, he doesn't ruin it by over-dominating the album - this sort of sensibility is rare and greatly appreciated. Very well written and produced.