Instruct: Classify a given review as either positive or negative.
Query: Hate to Be Gushy, But ...

Led Zeppelin's big achievement was melting so many musical elements into one whole. They take booze and literature, gospel and blues, slow and fast, groove and melody ... and make them their own. If they sin, it's on the side of making big boring soup ("Achilles Last Stand"?) But masterpieces like Kashmir and Black Dog and Trampled Under Foot cover a multitude of sins. Led Zeppelin, the box set, works as cultural touchstone or good driving music (in small doses).