The music was written mostly by David Gilmour and Rick Wright; lyrically, the album deals with themes of communication. Recording took place in several locations, including the band's Britannia Row Studios, and Gilmour's houseboat, Astoria.
Contains the original 1975 album + 9 bonus tracks
Bonus tracks consist of:
9 studio rarities
6 of which have never been released in any way
4 of these newly mixed by James Guthrie, 2 are original studio mixes