Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Suprisingly imaginative even after 30 years

This is a classic recording that was an influence on many Rock bands of the later 1970's and 1980's. For the limited budget that Black Sabbath made this album on, they really did an effective job. From War Pigs to Paranoid, Black Sabbath blends their unique sound brilliantly. A must have to any R&R fan!