The "Why Pink Floyd?" campaign was supported by a flying pig above Battersea Power Station in London in 1977 and was responsible of the success for the album "Animals" released in 1977.
Britannia Row Studios
In 1976 Pink Floyd made a deal with the EMI Harvest label to buy a three-story block of churchhalls in the London area of Islington. They named it to Brittania Row Studios. They started recording in april 1976 en in early 1977 it was finished.
Promo for Orwell's book Animal Farm
In 1977 they released the album "Animals" with another concept by Roger Waters. George Orwells’ Animal Farm!
The first two songs were outtakes for their previous album "Wish You Were Here". Those were "Raving And Drooling" and "Gotta Be Crazy" renamed to "Sheep" and "Dogs" in the concept of "Animals". Both written by Roger Waters and David Gilmour. "Sheep" contains a modified version of the biblical Psalm 23 and "Dogs" is about the fall of business men caused by their own power struggle. The other songs were all written by Roger Waters about pigs. "Pigs On The Wing" contains references to Waters' private life; his new romantic interest named Carolyne Anne Christie (married to Rock Scully, manager of the Grateful Dead). The influence of David Gilmour's guitarplay is very strong on this album. But after this album a power struggle started between Roger Waters and David Gilmour which would lead into a seperation after the album "The Final Cut" in 1983. Roger left the band that year.
The album cover was responsible for the success of the Battersea Power Station. The station was shutdown in 1983 and remained empty for years. which was used in movies like Hitchcock's "Sabotage", Michael Radford's "Nineteen Eighty-Four". Alfonso Cuarón's "Children of Men" and many episodes of the TV series of Doctor Who.

The album reached # 2 in the UK and #3 in the USA.
26 September 2011 - A flying pig again above Battersea
Original album cover
Animals (1977)
Pigs on the Wing (Part 1) / Dogs / Pigs (Three Different Ones) / Sheep / Pigs on the Wing (Part 2)
Sheep

Dogs