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Philips Records (PPI)
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reel-to-reel tape
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pop music charts
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drum machines
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Echo
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audio cassettes
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pirate radio (Radio Caroline, Radio Veronica broadcast English for a time from 1962)
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home multi-track (Portastudio)
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sampling keyboard (Chamberlin 1948, Mellotron 1963, Fairlight 1979)
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digital audio
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CD
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MIDI
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SoundTools (later ProTools)
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audio online (IUMA Usenet)
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MP3s
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DVD
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“iPods” (Diamond Rio)
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P2P music (Napster)
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Major label store online (Listen.com)
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iTunes