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  Music boxes appeared between 1800 and 1815, and represent probably the earliest example of music and technology.
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  experiments with recourding by thomas edison & emile berliner
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  Telephone was invented
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  emile beliner develops the gramophone in germany whitch leads to the develoment of the 78 rpm records
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  Records as we know them were first sold
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  Theodore P. Brown invented the Aerial Piano - the first commercial player piano.
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  Hutchison was the inventor of the first electrical hearing aid. It was also known as the microtelephone since it was essentially a self-contained version of the early telephone as invented by Alexander Graham Bell in the 1870s.
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  Amplifiers for record players and radios were first sold.
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  Tape recorder was invented.
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  Electric keyboard was invented.
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  Drum machines invented
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  The first portable music player - the transistor radio - came to be.
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  philips & sony lanch the digital compact disc or CD
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  auto-tune (an audio processor originally created to disguise or correct off - pitch notes for both voice and guitar) is introduced by antares audio technologies based in california, USA.
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  apple introduces the ipod
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  Jukeboxes dominated US record sales.
