Creating Keyboard Split Tracks In Logic Pro

Here are instructions for how to create a “keyboard split” track in Logic Pro, where the left hand plays a different software instrument to the right. I used to create an electric piano patch with tones above C2 (1 octave below middle C) having a delay.

1. Create the individual tracks as you would normally.
2. Select them, right click, and select “Create Track Stack.”
3. Select “Summing stack.”
4. In the track settings on the left, adjust the “Key Limit” so that one track covers the left hand and the other covers the right.
5. Select the track stack to record a take.

I don’t know if this is the correct way to do it, but it was surprisingly difficult to find this information online: many of the queries for “split track” were for splitting clips. But this seems like a pretty versatile technique for combining software instruments and having them respond to a single input source. Based on what’s available, it looks like it’s possible to do something similar across the velocity dimension too.