Learn how to use the built in Apple Quicktime Synth in order to access the General MIDI (GM) sound set in Logic Pro X. The Quicktime Synth provides the full range of instruments and drum kits available on GM compatable synthesizers and sound modules.
For those people who use the GM soundset, Logic Pro X has thrown a slight spanner in the works by removing the Quicktime Synth from the environment. However, all is far from lost as the GM synthesizer is still available in Logic Pro X, just no longer in the environment.
This tutorial demonstrates how to set up and use the Quicktime Synth, however the techniques in this tutorial can be used to gain up to 16 MIDI channels from any single multichannel Software plugin MIDI synthesizer in Logic Pro X.
Create a new Software Instrument track in your Logic Pro X arrangement.
On the instrument channel of your newly created track, click to the right hand side of the Instrument button and navigate to AU Instruments>Apple>DLSMusicDevice>Stereo/Multi Output
Navigate to the Window menu and select Open MIDI Environment from the drop down menu
In the Environment window, ake sure that you are on the Mixer layer.
In the Environment window, click on the New menu and select Multi-Instrument from the drop down menu.
In the parameters box on the left in the inspector, rename the Multi Instrument Quicktime Synth.
Activate the channels you would like to use on your Quicktime Synth by clicking on and unchecking the boxes on your Multi Instrument.
Drag a cable from the Multi-Instrument object into the channel that contains the DLSMusicDevice you loaded in Step 2.
In the resulting dialogue box, click Remove
In the Environment window click on the Edit menu and select Copy from the drop down menu.
In the Main Window, click on the + button above the track list and create a new External MIDI track.
In the Main Window select Edit>Paste from the menu.
From the resulting dialogue box, select Create