YAMAHA CK61- TUTORIAL - BackTrack With USB KEY
24:18
YAMAHA CK61 - Tutorial - MIC THROUGH
19:54
Yamaha CK 61 : That was a surprise!
16:53
Yamaha CK61 - Using Back Tracks
26:08
YAMAHA CK61 Demo & Review
6:01
TX81Z / DX11 - From 8 to 16 voices polyphony
8:59
【YAMAHA CK61】Performace Demo (5曲) / 演奏例 / pf+Stgs, oboe, violin, Brass, Guitar, etc
32:43
The New Yamaha CK61 - Jaw Dropping Good!
27:14