Here’s a multiscript for KONTAKT 4 that can trigger keys–and keyswitches–via MIDI CCs. That way instead of having to hold down cumbersome keyswitches while you play, you can just use MIDI CCs instead.

Basically, you can take a CC #, like 1 (mod wheel), and then select the destination channel (including options of all channels at once, or route it directly from whichever MIDI channel the CC data is coming from to the same output MIDI channel). Then you can select which key you want it to hold, while the MIDI CC # is over half-way up. When the MIDI CC # is back down, it’ll release the note.

http://www.orangetreesamples.com/download/CC_to_MIDI_Note.zip

Extract the zip file and put the NKP file along with the rest of your KONTAKT multiscripts.

Enjoy!