Instruct: Classify the given review into positive or negative sentiment.
Query: four and a half, actually

I'd give this five stars, but I'd save that for a Dead show...like a Dick's Picks or full show. However, this album serves as a testament to Dark Star, which in my opinion is the greatest song of all time, at least I'd say it's my favorite song. The Dead being the greatest musical assemblage of musicians show how over 25 years they transformed this piece, and where they could go with it, and what it's potential was. It's a [good] tune, all around and is THE signature Grateful Dead song. What more can you say?