I should have pointed out that this kbd will be used as part of a contemporary worship band. We typically use Ac. guitar, El. guitar, drums, bass, kbd, and 3 or 4 singers on our worship teams.
So, the MM8 will only be one of several in the mix. Usually the kbd player will do synth pad, string, brass, organ, or EP fills. Seldom will he use full solo piano. If he wants to do that, there's a Yammy C7 Grand sitting right next to him, when needed.
All that so as to say that 32 poly is plenty, even if he layers 2 voices. Also, the styles are not essential in our application. Arps on the other hand, could be a hoot.
Tim
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Tim Schaeffer
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YAMAHA CVP-509 / Korg Pa300