It's 1976, it's 'Top Of the Pops'. The as yet unnamed 'Legs & Co' are called upon to interpret a disco version of the 'Jaws' theme by this man --
The routine, choreographed by the notorious Flick Colby, boggles the mind and bends the parameters of reality. Six pretty girls, wearing only skin tight rubber wet suit tops, high kick and pirouette around, occasionally pausing to mime shock and horror at an imaginary shark attack.
Now and again, dangling bare legs are superimposed at the top of the screen and, all the while, a pathetic balsa wood panto backdrop of a seascape has a number of cut out cardboard fins pulled jerkily across it. The girls glow, then perspire, then sweat like dray horses. Later on, no doubt, they are admitted to hospital, as the Lalo Schifrin record (not one of his best) slides further and further down the charts.
Here it is in all its murky glory.
It makes you proud to be British.