There is a new program for Logic by Audio Grocery called [url=http://www.audiogrocery.com/a.g_toolkit_pro.htm][color=blue] Articulation Maps Pro [/color][/url].
THE PROBLEM
The only thing Apple Logic has done to accommodate keyswitching is the limiting of the Score Style ranges so that a keyswitch in a region does not show up in a score.
What haven't they done?
1. Keyswitches do not chase.
As you are moving the playhead to and fro, composing and orchestrating, checking and rechecking, the intended patch of a track is not updated in Logic. The patch remains set to whatever keyswitch it last received live or by track playback.
2. Keyswitches cannot be labeled.
The Logic user has no means to identify what keyswitch is currently playing. They cannot be labeled in Piano Roll, where the user is most likely to alter a keyswitch. And this requires the user to sift through what is likely the gutter or the attic of a piano roll screen, fishing about for the KS note and changing it according to his memory of any given template.
Nor can keyswitches be labeled in Event List, where they appear as just another note. If you could label a key and filter a range, conceivably the user could have brought up a list of which patches are in the track at what bar / beat / division / tick. But in Event List note ranges cannot be filtered, and notes cannot be labeled.
3. Keyswitches are transposed with their region when region parameters are altered.
Want to raise that section of the song a whole step using the region parameter? To Logic, your keyswitch is just another MIDI note, and all notes just went up two steps. Your sustains just turned into pizzicatos, and the staccato winds are now trilling.
THE SOLUTION
Articulation Maps Pro allows the user to change patches with automation. From VSL's plugin point of view, it's still a keyswitch. But it is no longer a MIDI note per se in Logic.
AM Pro will:
1. Chase the right patch change no matter where you move the playhead.
2. Allow you to label the patch, to be read in Main. Piano Roll and Event List are not involved.
3. Separate patch selection from Region Parameter settings.
My string template has solo / chamber / Dimension / ensemble / Appassionata patches covering the lion's share of available patches. With the use of two automation lanes per instrument, I can select the number of players and the correct articulation for each of the five string sections. It's plainly there in Main, chase-able, labeled, and held harmless to MIDI transposition and other MIDI transforms.
(And if I had a slightly smaller template, I could achieve this with only one automation lane per instrument.)
AM Pro does a lot of other things too. But check the videos for that. You'll see that this program comes within a larger bundle called the Logic X Toolkit PRO v2.0.
