While recording 1994's The Division Bell, David Gilmour, Richard Wright, and Nick Mason also put to tape some ambient instrumental experiments they jokingly dubbed "The Big Bong Theory." After Wright's death, Gilmour and Mason refashioned those ideas into Pink Floyd's farewell album, The Endless River. The richly textured music often revisits previous Floyd terrain: “Anisina” is reminiscent of “Us and Them,” while “Allons-y (1)" quotes the disco-tinged throb of "Run Like Hell." Amidst the ambient beauty, only the closing "Louder Than Words" features Gilmour's wistful vocals.