[1] It consists of "animated visions of the apocalypse",[2] and includes films such as Babylon and Sweet Disaster.
[2] The films are fairly obscure; Nick Park noted that Babylon "hasn't really seen the light of day for a long time.
[3] ScreenOnline notes that the film "spent ten wordless minutes subtly conveying a couple's fear in the face of an incoming nuclear blast.
The title of the short came from David Anderson "going to a carol concert in Bristol with the composer Martin Kiszko and listening to 'Oh Little Town of Bethlehem".
[3] ScreenOnline cited Dreamless Sleep as an example of how "later work strengthened Anderson's command of his complex technical resources".