Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The most maligned Sabbath album!

This has to be the most misunderstood and maligned of all Black Sabbath's albums. First, Ozzy Osboune is not on vocals and this for many fans is enough to label it as bad. Second, the corny cover. Third, Ian Gillan's vocals are an aquired taste to say the least. But if one puts prejudice aside one will hear a good solid metal album that delivers on every level. Great songs, great performances and the trademark Sabbath sound. There is one flaw- the mix. The sound on the album is rather muddled and the drums can hardly be heard. Even on the remasterd edition, this characteristic remains. In spite of that I still recommend it as a view of Black Sabbath's history. High points include the fast paced "Thrashed" and "Zero the Hero" with a before-its-time industrial feel. The title track as well is quite haunting, with Ian Gillan's vocals a standout.