'Pigs' Pink Floyd Demo's 1976 Alternative version Rare

Pink Floyd hoarders finally released this for profit on vinyl From Yeeshhkul, these would be from a cassette from summer 1976 which contain earlier studio recordings for the Animals album. Sheep has the old Raving And Drooling lyrics, Dogs has Waters and Gilmour singing each others lead vocal parts and completely different guitar solos from the finished work. Pigs doesn't have all the final overdubs but is quite similar to the album version.