Junost-21: Russian analog polyphonic keytar synthesizer from 1984.
The video represents only general possibilities of this machine. I am soviet analog gear expert, so please feel free to leave your comments and questions.
All demonstrated units on this channel are available on eBay sales from "factorysounds" seller.
![](https://i.ytimg.com/vi/KUmObqSAuwc/mqdefault.jpg)