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250 Chapter 10 Working With Instruments and Effects
6 You’ll note that the Channel parameter is set to 1. Create a few new External MIDI tracks
by following steps 1 and 2. You’ll note that these new tracks are called GM Device 2,
GM Device 3, GM Device 4, and so on. Click on each of these tracks in the track list, and
keep an eye on the Channel parameter in the Track Parameter box of the Inspector.
Each of these tracks is routed to a sub-channel of the GM Device Multi Instrument
object. The selection of each track is mirrored by the 16 sub-channel entries shown in
the right column of the Library tab.
It is important to note that Logic Express did not create a new Multi Instrument object
for each new External MIDI track. Rather, it assigned each subsequent track to sub-
channels of the GM Device Multi Instrument object. You can create up to 16 tracks that
are assigned on a one-to-one basis with each sub-channel of a Multi Instrument Object.
So, what happens if you need more channels, for more external MIDI synthesizers and
modules?
You have a couple of options. The easiest way is to use the Library tab to reassign
newly created tracks to particular MIDI ports and channels.
To reassign tracks to channels with the Library tab:
1 Create a few new External MIDI tracks in the Arrange window, following steps 2 and 3
in the example above.
2 Click on a track, and then click on a Port and sub-channel entry in the Library tab.
 If you choose a sub-channel of the GM Device you will reassign the selected track to
this sub-channel.
 If you choose a sub-channel of a different MIDI Port, the track will be reassigned
accordingly (Unitor 8 Port 5, sub-channel 4 as an example). Take a look at the new
Multi Instrument object (Unitor 8 Port 5) in the Environment.
Note: The first time you do this for each port or sub-channel, a new multi instrument
object will be created in the Environment (along with corresponding Mixer channels).
Once objects have been created for all ports, the reassignment of tracks to ports or
channels does not create new objects.
An alternative to using the Library tab for multi instrument object creation is the
Environment.
To create a new external MIDI instrument in the Environment:
1 Open the Environment window by choosing Window > Environment (or using the
corresponding key command, default: Command-8).
2 This should default to the MIDI Instr. layer, but if not, click the down arrow to the left of
the Link button, and choose the MIDI Instr. entry.
3 Click the New menu, and take a look at the commands available. These are all
environment objects that you can create. For now, choose Multi Instrument.