Sound and vision | 28 September 2017

To get a reminder of how strange the 1970s were, there’s no need to plough through lengthy social and political histories. Go instead to YouTube, and watch the public-information films made for schoolchildren. Take Lonely Water (1973), in which Donald Pleasence provides the voice of death, stalking careless children and dragging them to a watery grave. There’s Apaches (1977), in which kids playing on a farm suffer various recondite forms of agricultural death (falling under the wheels of a moving tractor, drowning in slurry). Or try my personal nightmare, The Finishing Line (1977); a school sports day, played out on a railway line, which ends with the traditional sprint through a tunnel pursued by a train and the bodies of dozens of dead children laid out on the track. It wasn’t all Spangles and Space hoppers, whatever stand-up comedians might have you believe.

This autumn, two enormous new rock box sets — so heavy you could devise a workout routine around them — take on the 1970s, and offer differing views of that decade but linked perhaps by those public-information films.