Yamaha PortaSound PSS-140 Keyboard Demo Song
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Yamaha PSS 50 - ALL the 13 Demo Songs !
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Yamaha PSS-140 - full review
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Various Yamaha XG MIDI demo tracks
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E-Mu Planet Earth Synthesizer Factory Demo Songs
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All that you need to know (!) about 80s Synths
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Casiotone MT-240 Demo Song
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Yamaha PSS-270 demonstration song "The happiest keyboard in the world"
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