ReWire Tutorial Article Logic 7 - Step 3: Routing MIDI
Via ReWire you are not limited to transmitting only audio from Reason to Logic, you can also send MIDI from Logic to Reason. This way you can control everything from Logic - in effect, Reason becomes a rack of devices that you play from the Rewire host! Or, if you like, you can have Reason's sequencer play some of the devices and the sequencer in Logic play some - it's up to you.
1. In Reason, create the device you want to play.
2. In Logic, open up the Environment from the Windows menu.
3. Pull down the "New" menu and create a ReWire object by selecting Internal -> ReWire.
4. Select the ReWire object you just created and make sure Device is set to Reason and Bus to 6. From the Channel menu, select the Reason device you created in step 1. Name this object "ReWire MIDI 1" (see image).
You can now close the Environment window. The next step is to configure a ReWire MIDI Instrument to communicate with Reason devices.
5. Open the Arrangement window again, and click and hold on the icon of an unused track in the track list. A pop-up menu will appear.
6. Select "ReWire MIDI 1" from the "MIDI Instr." submenu (see image).
The MIDI track is now routed to the correct device in Reason. If you enter some MIDI notes on the track and hit play, you will hear them being played by this Reason instrument. This works just as if each Reason device was a stand-alone hardware MIDI sound module.
You can also play Reason instruments "live" this way by activating MIDI input for the track in Logic and playing your MIDI keyboard. All incoming MIDI is immediately sent to the track's MIDI Output - the Reason device.
If you want to add more ReWire MIDI channels in Logic, just repeat the above steps to create additional ReWire objects in the Logic Environment.
Step 4: Using multiple ReWire channels