Hi
Are you talking about under MIDI control or under keyboard control?
If under keyboard control, you can press the demo button under the LCD screen to demo the voice and get insight into how to play them. There is a MIDI reference guide in the back of the user manual which discusses control codes for the midi voice control.
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Al Giordano
www.al-giordano.comTyros 2, Yamaha P-250, Korg Triton Extreme 76, Roland VK8-M, DW Collectors Series Drums