Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A case of a rock band going on a little too long

Black Sabbath's seventh album (1976) was full of new musical direction, but the results were dreadful. The turmoil within Sabbath didn't help matters either and the lyrics are especially difficult to take. They were beginning to fall apart and is definitely in evidence here. Even when Deep Purple were under such strain they could still deliver a really good album like "Who Do We Think We Are." Overall, there is no doubt this marks the weakest of Ozzy's run with Sabbath.Creedence Clearwater Revival had their Mardi Gras and Black Sabbath had their Technical Ecstasy.Buyer beware!