Hey!
I am a guitar and keyboard player, and have used Biab since Atari time. At that time the program was on a 720 kb floppydisc. Today, it's much more advanced with Real drums and Real Tracks. I love this program. Updates it every year (Audio file version). I use Biab in my studio to make backing tracks. You can modulate and mix with the Tracks how you want. There are no restrictions on what to do. Let the imagination flow.
You can sync Biab with your arranger keyboard. Enter the chords and let Biab play the style in the keyboard. Replace tracks in style and use real tracks from Biab. There are no limits on what to do. Great program that I can really recommend, but there is a lot to learn before you master this program.
Download and try before you buy, and see if this program is for you.

// Fozzie