Uploaded March 2021 | Updated September 2026, 1 week ago
100 professionally-programmed sounds for Yamaha EOS YS100, YS200 or B200 digital synthesizers. The parameters used to program these sounds are not accessible through the synthesizer's interface. Maybe there's an app out there that can.
100 professionally-programmed sounds for Yamaha EOS YS100, YS200 or B200 digital synthesizers. The parameters used to program these sounds are not accessible through the synthesizer's interface. Maybe there's an app out there that can.
![1970 MATTEL Optigan Program Disc: Big Top Marching Band (4/4) [70163]](https://i.ytimg.com/vi/wrqq8LKqYRY/mqdefault.jpg "1970 MATTEL Optigan Program Disc: Big Top Marching Band (4/4) [70163]
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.")
