"He was an extraordinarily funny, witty, intelligent, gregarious guy," said Gilmour about Barrett. "We had hitchiked around the south of France, and stayed in campsites and busked on the seafront and been arrested for our troubles in St. Tropez. We were friends from about 14."

Gilmour ultimately replaced Barrett in Pink Floyd in early 1968 after the band watched his decline in mental health due to an excess of drugs. "It felt tragic because it felt permanent," explained the guitarist. "It felt that whatever was happening to him was a rapid deterioration of his mental faculties."

The session also saw Gilmour and wife/author/lyricist Polly Samson discuss the making of the latest release, with the guitarist speaking at length about his history with his former band.