2

4 On the channel strip, click the Add button to add additional outputs.
Each time you add an output, a new section of the channel strip is added, with the next
available pair of outputs.
Each output uses the same instrument, but each can have its own inserts, volume, pan,
and expressions settings and its own effect sends, as well as its own outputs.
For more information about using multiple instrument outputs, see the Logic Pro
User Manual and the Logic Studio Instruments manual. Information about specific
instruments (for example, Ultrabeat) can be found in the chapters covering those
instruments.
Using External MIDI Instruments in MainStage
You can add an external MIDI instrument channel strip to a patch and use it to play an
external instrument, such as a hardware synthesizer. You can also use an external
instrument to “play” a ReWire application.
When you use an external MIDI instrument channel strip, you choose the MIDI channel
to send MIDI output from MainStage to the instrument, and choose the audio inputs to
receive audio from the instrument. The audio output from the instrument is routed to
the input of the channel strip, where you can process it using MainStage effects.
To add an external instrument channel strip
1 Click the Add Channel Strip (+) button in the upper-right corner of the Channel Strips
area.
2 In the New Channel Strip dialog, select External Instrument.
You can also choose the MIDI input and output, the format, and the audio input and
output for the channel strip. You can choose an audio channel or a ReWire application
for the input, but cannot choose a bus. The MIDI input pop-up menu shows the Keyboard
or MIDI Activity screen controls (which receive MIDI note input) currently in the workspace.
Note: When using an external instrument to send MIDI to a ReWire slave application
(such as Reason or Live), you should disable any MIDI input the slave application receives
directly from the hardware controller. For information about disabling MIDI input from
a hardware device, consult the documentation for the application.
For ReWire applications, when you add an external channel strip, set the MIDI port to the
ReWire slave. The Channel list also updates based on the port. Some ReWire slaves set
up multiple ports. To use a ReWire application with MainStage, open the ReWire application
after opening MainStage.
67Chapter 5 Working in Edit Mode