You can connect and use a MIDI controller with the Sunday Keys App.
Here are a few tips to help you get it set up quickly:
1. Verify your MIDI controller is driverless and class-compliant.
If your MIDI controller is driverless and class-compliant, then you should be able to use it with the Sunday Keys App.
2. Connect your midi controller to your iPad.
Make sure you have your MIDI controller connected to your iPad, hub, power supply, and main keyboard.
3. Use MIDI Learn in the Sunday Keys App
You can use MIDI Learn in the Sunday Keys App to easily connect your MIDI controller’s knobs, buttons, faders, etc to control elements of the Sunday Keys main screen.
4. Troubleshooting MIDI
If you're having trouble getting your MIDI connections to behave as you'd expect after checking out the articles linked above, there are some simple steps you can take to identify the source of the issue.