Instruct: Classify Amazon reviews into positive or negative sentiment
Query: ROCK! ROCK! ROCK! (Bangs head to Whole Lotta Love)

Ok, I'm a musician and a journalist, so normally my reviews get a little long and complex, but I'm going to say this as simply and effeciently as possible: THERE HAS NEVER BEEN AND WILL NEVER BE AN ALBUM THAT ROCKS QUITE AS HARD AS THIS ONE! For pure headbanging enjoyment, as well as marvelling at Zep's incredible FLAIR (How's that for a metal band? FLAIR!), this is THE album to buy.