Uploaded September 2025 | Updated September 2026, 1 week ago
keyboard resource
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1920's Marxophone Vintage Antique Zither Spring Harp Keyboard Hammer Dulcimer
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![1970 MATTEL Optigan Program Disc: Pop Piano Plus Guitar (4/4) [69-0002-1]](https://i.ytimg.com/vi/j-37VDQ0Xgw/mqdefault.jpg "1970 MATTEL Optigan Program Disc: Pop Piano Plus Guitar (4/4) [69-0002-1]
Sounds from Optigan Music Maker. Get the Optigan app to hear better samples and it works just like the real thing. You can even play the virtual discs upside-down (backwards). Or, get them at optigan.com.")
![1970 MATTEL Optigan Program Disc: Latin Fever [70021]](https://i.ytimg.com/vi/k4CQFT-WSQ8/mqdefault.jpg "1970 MATTEL Optigan Program Disc: Latin Fever [70021]
Sounds from Optigan Music Maker. Get the Optigan app to hear better samples and it works just like the real thing. You can even play the virtual discs upside-down (backwards). Or, get them at optigan.com.")
