When ‘stereo demonstration’ records hit the market in the late ‘50s listeners could now be taken on a “stereo fantasia” as sound effects and Dixieland jazz swirled around their front rooms.
Mono now seemed hideously out-dated as stereo brought the home listening experience closer to that of the concert hall. “Ooh, just over there to the right - A timpani drum!”
Producers relished the new potential to get spacious with their music as well, and began panning like crazy as the FM radio boom took their music into more and more homes and cars.
The birth of stereo created a new standard for high fidelity and a new demand for higher quality from the customer.