David Gilmour and Polly Samson - Hay Festival 2016 (BBC)

The complete date is 2016-05-27. "The guitarist and writer discuss their songwriting partnership, the writing process between lyricist and musician. They have collaborated on four No1 albums: Pink Floyd’s The Division Bell and The Endless River, David Gilmour’s On An Island, and the recent Rattle That Lock. Hosted by Rosie Boycott." Nice interview, with some demo.