Hi rune,
Thanks for your message.
Cubasis is fully MIDI over Bluetooth compatible, and has been tested with various devices, such as CME’s Xkey Air keyboards and Yamaha’s MD-BT01 and UD-BT01 bluetooth adapters. Since we’re not equipped with Korg’s microkey device, I suggest to get in touch with them directly. We’re at hand to provide them with Cubasis promo codes for testing purposes, if required.
Additionally, here is the link to our quickstep tutorial, in setting up MIDI over Bluetooth in Cubasis:
MIDI Over Bluetooth | Cubasis Quick Tips
Best,
Lars