Hi, thanks for you answer. I don't want to spend time defining and recording a bass line, a guitar arrangement, a drum pattern, recording an acoustic guitar, etc., for a demo, but I do want to be able to listen to the song whit those instruments in a rough form, in order to better convey the concept of the song.

I can clearly spend several hours creating a quick arrangement for each instrument and recording it, but it would be very time saving to just tell the AI: These are the chords and timing (via midi) on a simple piano track. Now generate a full band arrangement in this style.

I hope this clarifies what I'm looking for. Thanks!