The band’s sixth recording Physical Graffiti, was released as a double album on 24 February 1975. PG was another monster seller for Led Zeppelin selling 8 million copies in the US.
The album was a high watermark for the band with more music that varied in style: heavy rock on “The Rover”, eastern influenced “Kashmir”, the quintessential ballad “Ten Years gone” and the acoustic “Black country woman”.
The album’s sleeve design features a photograph of a New York City tenement block, with interchanging window illustrations. The original album featured the building with the windows cut out on the cover and various sleeves that could be placed under the cover, filling the windows with the album title, track information or liner notes.
Physical Graffiti was Led Zeppelin’s first release on their own Swan Song Records label.