You can probably use the T4 styles with the T3, but not an earlier keyboard. Of course you can use all of the earlier keyboard's styles with the T4 though.

Cheers,

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.)