Roger Daltrey paid for one of rock's funniest album covers with a miserable afternoon in a bathtub.

For The Who Sell Out, Daltrey was lowered into a tub filled with Heinz baked beans and handed an oversized can. The joke reads instantly: here is the singer of one of Britain's loudest bands reduced to a grinning pitchman. The problem was that the beans were cold. Daltrey later remembered the shoot as brutally uncomfortable and associated it with becoming ill afterward.

That discomfort was serving a very precise idea. By late 1967, The Who had grown up alongside British pirate radio, especially Radio London, whose offshore broadcasts helped make new pop music unavoidable. The Marine Broadcasting Offences Act was bringing that era to an end just as Pete Townshend was looking for a concept that could hold the band's third album together. The answer was to make the LP behave like a pirate-radio broadcast: songs interrupted by station identifications, jingles and commercials.

The sleeve had to sell the same joke before the needle ever touched vinyl.

Track Records approached Sunday Times art director David King and illustrator Roger Law. Photographer David Montgomery made the pictures. Instead of presenting The Who as heroic musicians, the team divided the package into advertisements. On the front, a bare-chested Townshend brandishes an absurdly large stick of Odorono deodorant while Daltrey marinates in Heinz beans. Turn the record over and the campaign continues: Keith Moon promotes Medac acne cream and John Entwistle becomes the muscleman in a Charles Atlas parody.

The collision was perfect because The Who were already tangled up with advertising. The band had recorded real commercials, and Townshend was fascinated by the uncomfortable overlap between pop art, pop music and commerce. The album did not simply complain that musicians were products. It gleefully packaged the band as products and asked the buyer to enjoy the contradiction.

King and Law understood the visual language. These are not loose comedy photographs pasted onto a sleeve. The panels mimic magazine advertisements, with oversized products, carefully staged poses and copy underneath. The design makes the record rack look briefly like a newsstand.

The joke extended into the physical object. The original UK sleeve used all four members across front and back, so turning the LP over completed the campaign. Early copies also advertised a psychedelic poster by Adrian George inside. Decades later, deluxe editions restored that poster and other period ephemera, underlining how much of Sell Out's identity lived in packaging rather than in one square image.

There is a wonderful circularity to it. An album called The Who Sell Out pretends to sell deodorant, beans, acne cream and bodybuilding while actually trying to sell you The Who. The satire only works because the sleeve succeeds at the job it is mocking.

And Daltrey, freezing in that bathtub, became the punchline that survived longest.