Yamaha Portable Keyboard PSR-E473/PSR-EW425 | tutorial video 03. Using LIVE CONTROL knobs

In this video, you’ll see how to use the knobs to change the sound of the Voices as you perform. Yamaha Digital Keyboard PSR-E473/PSR-EW425 http://4wrd.it/PSRE473_WEB http://4wrd.it/PSREW425_WEB