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Yamaha SY77 Supplemental Manual, Midi Data Format for the SY-77 Synthesizer

Midi Data Format booklet, and original Yamaha document for the SY77 keyboard synthesizer workstation, in good to very good condition. I have a few of these available at this time.

• This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thank you so much for looking!

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