Led Zeppelin's final album may seem the most dated today, due to it's then revolutionary use of polyphonic synthesizers and it's very intensive production, foreshadowing the 80's sound. This also leaves the guitar lacking in raunch and the vocals somewhat muffled. Yet as an example of where Led Zeppelin was going in the late seventies, it's very interesting. Opener 'In the Evening' is a typical magestic Led Zeppelin rock number,(in the vein of Kashmir) enhanced by Jones's synths. 'South Bound Saurez' is a strange boogie style number with Jones taking center stage on piano. 'Fool in the Rain' is a weird samba type song which again shows Led Zeppelin doing something very different. 'Hot Dog' is one of Zep's worst songs in my opinion, a tastless ode to 50's rock n roll. 'Carouselambra' is the gem of this album, plastered in synths and charged with an ominous energy that carries it through it's ten minute duration. 'All My Love' is Robert's lament to the death of his son, Karac, but though the sentiment is genuine the dated synths fail to make the impact acoustic guitar would. Final number I'm gonna Crawl is a blues, but again the twist is the incorporation of synths, but it still works fantastically in the vein of it's predecesors Since I've been loving you and Tea for One. So, if you have got all the other albums and fancy something different, get it, especially for Carouselambra.