David Gilmour said:Both Nick and Rick were catatonic in terms of their playing ability at the beginning. Neither of them played on this at all really. In my view, they'd been destroyed by Roger.
The duo also clarified some of the ongoing rumors, namely that the material draws heavily from Gilmour’s unreleased experimental album, The Big Spliff. According to Uncut, the album is not at all based on The Big Spliff and incorporates only a few seconds from the original project. It also does not contain any material “The Soundscape”, the instrumental track originally released on the band’s 1995 Pulse Cassette.
Rather, The Endless River contains four different pieces on each side of the record, which focus on the “more atmospheric and digressive aspects of Pink Floyd and includes snippets of conversation.”