Which iconic album's innovative packaging design included a working zipper on the cover, revolutionizing how album artwork could incorporate physical interactive elements?

Product packaging in the music industry has evolved dramatically over the decades, often becoming as iconic as the music itself. From vinyl sleeves to digital downloads, how packaging influences consumer perception and artist expression has been a fascinating journey. This poll tests your knowledge about a revolutionary album packaging design that changed how consumers interacted with music products and set new standards for the industry.

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The Rolling Stones' 'Sticky Fingers' (1971)
Pink Floyd's 'The Dark Side of the Moon' (1973)
The Beatles' 'Sgt. Pepper's Lonely Hearts Club Band' (1967)
Led Zeppelin's 'In Through the Out Door' (1979)