Instruct: Classify a review into positive or negative sentiment.
Query: a truly great rock quartet

This album is awesome. Everything zepp were about is demonstrated in this album. How many more times is so underrated, bonham is superb on the drums and page's timin is perfect. Babe I'm gonna leave ya is a classic zeppelin song accoustic mixed with the heaviness that defined them durin the seventies. communication break down is just pure basic rock and anyone who listens to this album will be impressed by it. definetly up to the standards of the albums that came after LZ 2, IV, houses of the holy, physical graffiti. ur time is gonna come, john paul jones provides a very good organ intro, vocals by plant works really well.For anyone considering gettin into zeppelin I really urge you to listen to this, a superb first album providin the foundation for all the sucess they endured.