Popular or pop music—any genre of music that appeals to a wide audience or subculture—began in the late 19th century, with disco
veries by Thomas Edison and Emile Berliner. In 1877, Edison discovered that sound could be reproduced using a strip of tinfoil wrapped around a rotating metal cylinder. Edison’s ___________ provided ideas and inspiration for Berliner’s gramophone, which used flat discs to record sound.
