Instruct: Classify Amazon reviews into positive or negative sentiment
Query: With out this You couldnt Rock!

This is the Album that Started it all, Metal wise anyway, Black Sabbath was infuenced by them, Diamaond Head Nearly Ripped them Off, this is the first EVER "Satanic" album, this and the Band COVEN Spread the way for bands from Sabbath to Celtic Frost to Bathory to Mayhem and all Dark Bands in between, Musically its early sixties Acid Rock with lots of influance from Classical music mostly Bach and Beethoven Wonderfull uses of Horns and some Very Awesome Piano work an Absulute MUST for any true Metal collection or for anyone who like Johns Children and The Seeds or Early Jefferson Airplane and that Sound