I’ve been doing this with my Magic Keyboard case, but I’ve run into a few problems: I can’t work out how to switch octaves. When I open an Auv3 instrument‘s UI the keyboard stops playing it, which is presumably so you can use the keyboard for things like naming presets. Occasionally something happens and the keyboard stops working for one track.

It definitely does the job in a pinch, but I’m definitely happier with a controller, even if it’s just the Korg Nanokey studio.