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The first commercial disk
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First commercial release of the reel to rell tape recorder
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33 1/3 rpm LP record introduced
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RCA Victor introduce the 45rpm record
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Transistor radios were introduced
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Philips introduce the compact cassette
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Sony introduce the Walkman
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Sony & Philips introduce the CD player
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CD sales exceed LP sales
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Apple release the iPod
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Youtube is created
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Spotify is released