I've discovered Impro-visor today and I'm very excited with this
program. I want to arrive at home, tune the double bass and test it
intensively -- I'm at work now ;-)

My thoughts: long time ago I developed a similar program
(pymprovisator) with a similar goal: auto-generate compin' tracks.
I've suspended the development because I found a better program: MMA (
Musical MIDI Accompaniment), but the interface is very
Unix-compiler-like: write text, "compile" and launch the MIDI player
with the generated MIDI file.
I've no problem with this kind of software (since I'm primary software
developer, not musician), but I think that there is a bit unusable for
most people. In fact, I have a small project (WinMMA) for easing its
usage.

I must to recognize the merits of Band in a Box (although its
UI-design was very poor and no-intuitive). In a single program you
have all the features and you can ear in realtime your work. This is
very valuable for me. Also, you don't need to learn a
programming-language-like sintax for use it.

Well, your program seems to cover all my expectations. It looks
wonderful. In next weeks I'll post my impressions and suggestions.

Thank you for your work.

One question: is it Open-Source?

Best,

--
David
http://davidasorey.net