You can use MIDI controller to control this game!
The in-game control keys are assigned as follows:
|In-game Control||Key assignment||MIDI Note (Yamaha-based)||MIDI Note Number|
Assign the notes as above to play Twin Horizons.
Using MIDI controller will usually enable you to bypass rollover limit of your keyboard!
Tip: It is beneficial that you disable the velocity sensing while you play, since it is known to cause misfiring.