Roots of Metallic Spheres

David Jon Gilmour is an English musician, singer, and songwriter best known for being the lead guitarist of the English rock band Pink Floyd. He joined in 1967, shortly before the departure of founding member Syd Barrett. By the early 1980s, Pink Floyd had become one of the highest-selling and most acclaimed acts in music history. Following the departure of Roger Waters in 1985, Pink Floyd continued under Gilmour's leadership and released the studio albums A Momentary Lapse of Reason (1987), The Division Bell (1994) and The Endless River (2014).

Martin Glover, better known by his stage name Youth, is a British musician and record producer. He is a founding member and bassist of the rock band Killing Joke, and a member of the Fireman, along with Paul McCartney.