From short film Pioneer to romantic crime drama Ain't Them Bodies Saints and Disney epic Pete's Dragon, David Lowery has made a habit of examining the nature of identity, family and relationships from altogether sideways perspectives.

It's an approach that's served him well - and one he uses to great effect again in his latest offering, A Ghost Story.

A Ghost Story stars Casey Affleck as the spirit of a recently deceased man who remains in the house he shared with his wife, played by Rooney Mara. It's scored by Daniel Hart, who David has worked with on many occasions. Daniel's compositions for the film stemmed from a song he wrote for his band, Dark Rooms, and you'll hear plenty of it during the course of the conversation.

Edith and David also discuss the music which inspired him as an aspiring director, and also what it's like to work with the great Robert Redford.