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The Long-Playing Record
The Long-playing record, or LP, was introduced by the American record label, Columbia, in 1948, two years before the publication of the present cartoon. Its speed of 33 1/3 revolutions per minute initially allowed a playing time of 23 minutes per side for a 12-inch disc, 18 minutes greater than the 5 minute playing time of records with the speed of 78 pm. This was particularly useful for the recording of longer Classical works, such as operas and symphonies, the unity of which was easily spoiled by the constant need to turn or change each disc. However, as this cartoon suggests, it also allowed the listener a greater opportunity to fall asleep while the music was playing.