Apple Logic Express 9 - Manual (Page 271)

You can remotely switch between channel strip settings by sending MIDI program change
messages. This allows you to select your favorite sounds (consisting of a complete channel
strip setting that can contain a software instrument and effect plug-ins) by pushing a
button on your MIDI keyboard. This feature is named channel strip performances, and is
designed for live use of Logic Express.
Important: Only program change messages sent on MIDI channel 1 will switch between
channel strip performances. All program change messages sent on other MIDI channels
are forwarded to Audio Units instruments, if applicable.
Channel strip performances can be used for all audio channel strip types. They are saved
in the Performances sub-folder (in ~/Library/Application Support/Logic/Channel Strip
Settings/Channel Strip name). The performance names start with the corresponding
program change number (for example, 001Piano, 045FlangeGuitar, 111ArcoCelloHall).
There are 128 performances (corresponding to 128 available program change events).
To create a performance setting
1 Configure a channel strip that you want to have available as a performance (by opening
a channel strip setting from the factory library and making changes according to your
needs, for example).
2 Click the Setting button at the top of the channel strip, then choose Save as Performance
from the menu.
3 In the dialog that appears, enter a performance name, choose a program change number,
and click OK.
4 Send the program change number from your MIDI controller.
When a channel strip receives a program change message (on MIDI channel 1) that
corresponds to an assigned performance number, it loads this performance.
Note: If an unassigned program change value is sent, the channel strip ignores the
message, and the currently loaded channel strip performance setting remains in place.
271 Chapter 10 Working with Instruments and Effects