Yamaha PSR S670 Workstation Keyboard Live Demo! For Sale! :) | Visually Impaired but God blessed him with great talent! :) Thank you sir! Sorry we did not catch your name. 💖
Presentation of Key Features on PSR-S670, English - YouTube
PSR-S670 Recording Function - YouTube
Kraft Music - Yamaha PSR-S670 Arranger Demo with Blake Angelos - YouTube