I just connect MIDI out on the Motif to MIDI in on the T3. That's it. Turn on both keyboards. On the Motif you can turn off all the parts of a Performance and just play T3 directly from the Motif. You select Styles, Variations, Intros, Endings on the T3 as well as the Left, R1,2,3 Voices.

Here's what I do:

I create a 4 part performance on the Motif. It usually has Drums, Bass, Pad and Piano. The Drums, Bass and Pad have 5 different arpeggios assigned to each so I have 5 different variations. The Piano is used as a Lead so no Arp.

The T3 has Live Strings on the Left Voice, Live Strings on the Right 1 Voice, Guitar or Trumpet on Right 2 and Breathy Sax on Right 3.

I then start the Performance and when I want to change leads I turn off Part 4 on the motif and turn on one of the Right Voices on the T3.

I could also do the reverse and use a Style on the T3 and mix leads from the T3 and Motif.

Or I could use a Style from the T3 but with the Drum and Bass channels off and use the Drums and Bass from the Motif.

I have a two tier stand setup so it's easy for me to select from either board. Hope that helps.

Yes, that's the Full Concert Grand on the Motif.

Joe