Shine On You Crazy Diamond discussed by voices, including David Gilmour of Pink Floyd.

Understood to have been written about Syd Barrett, their former band member, it’s both a tribute, and a call for him to ‘shine on’ despite suffering serious mental health issues.

David Gilmour of Pink Floyd recalls the legendary day that Syd Barrett unexpectedly appeared in the studio where they were recording Wish You Were Here, the album bookended by Shine On.

Nobody recognised Syd at first; once handsome and slender, he'd gained weight and shaved his head and eyebrows.

Anna Gascoigne talks about the pain of losing her son, Jay. He was a gentle boy, a talented musician, who eventually succumbed to the multiple mental health problems he'd battled for years. Shine On You Crazy Diamond, for Anna, speaks directly to her of Jay; he loved Pink Floyd and Shine On was played at his memorial service.

Anna, herself, was driven to the brink of suicide by her son’s death. It was the support of her family – including her brother, Paul Gascoigne - that helped her to carry on.

Ed Steelefox, a DJ based in Worcester, describes a New Year’s Eve house party from a few years ago. As guests gradually fell asleep, he chose to slip out the door leaving a non-stop playlist of different, live, versions of Shine On You Crazy Diamond to penetrate their dreams.

And regular Soul Music contributor, Professor Allan Moore takes to the grand piano to play and talk about what it is in the track that is so directly reminiscent of Syd Barrett.

Series about pieces of music with a powerful emotional impact.'

Details of organisations offering information and support are available at bbc.co.uk/actionline/

Producer: Karen Gregor

First broadcast on BBC Radio 4 in December 2018.