Instruct: Classify a given Amazon review into positive or negative sentiment.
Query: Best album yet

These guys are probably the most underrated band around. This album is a little heavier than the last few but at the same time also more technical. The keyboards are very prominent now, and I think they bring that extra element to the sound. I highly recommend this album.One of the great things about Clutch is that they work harder than any other band I can thnk of. They seem to put out a new album every 18 months or so despite the fact that they are touring like 250 days a year. And they are all quality albums.