It can be seamlessly done with Yamaha, and most other keyboards, either as registrations, or merely just selecting another style, and the tempo, unless programmed for a change, will remain constant.

Gary
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)