Thirteenth studio album by the British progressive rock band. Released in September 1987, the album was recorded primarily on guitarist David Gilmour's converted boathouse, Astoria. It was the first Pink Floyd album recorded without founding member Roger Waters, who departed in 1985. The album was promoted with a successful world tour and with three singles: the double A-side 'Learning to Fly'/'Terminal Frost', 'On the Turning Away', and 'One Slip'.