Yamaha DGX 670 - Peaceful Piano Rain Music (Relax, Meditate, Study)
12:57
Yamaha DGX-670 Demo - ALL PLAYING NO TALKING
1:16:52
Yamaha DGX 670 Epic: The WHOLE Truth (Features, Facts, Figures)
21:11
Yamaha DGX-670 Sounds Demo! No Talking, Just Playing!
26:16
Yamaha DGX-670: Recording MIDI
5:32
Yamaha DGX 670 keyboard demo
31:16
*NEW* Yamaha P-525 vs other major brands. Yamaha DGX 670 vs Kawai ES8 vs Roland FP-90 vs Casio S3100
49:38
YAMAHA DGX 670 EPIC (Must See!) Pianos, Styles & Plug GUITAR/Mic in! & Orchestra!
23:04