Can I use a Roland FP-90X to play a song, and use its MIDI out to send MIDI signal to the CT-S1?
It appears if the CT-S1 has a MIDI in, then it'd work. But since CT-S1 doesn't, can't I use a device such as DOREMidi UMH-21, to convert CT-S1's USB port to MIDI in and out pots?
If so, it seems I can use Roland's FP-90X, which is said to have one of the best keyboard action in portable pianos, and give the sound of CT-S1, and perhaps even Yamaha DGX670's CFX sound, and Kawai ES120's SK-EX sound.