"Physical Graffiti" was a significant change in a consistent way and you could tell the album also mostly positive on.
The term "hard rock", and taking quite the mark. The album with "Custard Pie", "Trampled Underfoot" and "Kashmir" three early classics of the British. The latter is a sparkling diamond in the rough in the dark, the fixed part of the live set is (was), during the first two songs make the controlled direction changes significantly. Further knowledge on the first side of the LP "Houses of the Holy" which was designed as a small gimmick, and the long "In My Time of Dying" to please. "The Rover" sounds too arbitrary and overproduced in a confident, forceful look.
On the second side of the LP to other highlights see the brilliant, long "In the Light", the furious "Down by the Seaside", "Ten Years Gone", "Night Flight", "The Wanton Song", "Boogie with Stu "and the bluesy Southern Rocker" Black Country Woman ". "Sick Again" I consider as a good average material.
The album is well produced for 1975. Surely a decade later would have been possible with better quality, but this does not prevent me to forgive the highest rating.
Conclusion: See heading. 5 Stars!