Gentlemen, we are not here to judge one another. I take everyone's advice, and I highly appreciate it. It's pretty impressive how both of you deal with this issue, each in their own unique way. In reality, there is no right or wrong, as long as it works.

My next move will be to try the chord sequencer, since it would be the BK-9 playing the chords back, and hopefully it won't freak itself out, while recording it as a MIDI file, as long as it would allow me to do a recording while playing a chord sequence, we'll see, but all your inputs will also be taken into consideration.

I only wish that Roland would've done something similar with the BK-9 like Technics did with their arrangers, where you can instruct the arranger that you want a chord of C two measures, a chord of G7 for four measures, a chord of F for 2 measures etc. etc. and the arranger would create the chord sequence without a single note being played... all you would do is just to "type" in the chords...

Roland came out with the Go-Key 3 and 5 recently, and it has a similar function, a chord sequencer, take a look at the link below, and fast forward to 11:54. I assume that once the keyboard has the chord sequence (progression) you can create a backing track, and there shouldn't be any glitch whatsoever. Correct me if I'm wrong...
https://youtu.be/4IyLxXyPLjQ?feature=shared

Diki, I'm not sure where you heard my demo, are you sure you're talking 'bout me?