This is a new program from Rayzoon Technologies. It's a Vst module that simulates a real drummer by interacting with notes that you play. It also contains an arranger module that allows you to preset intros, variations, fills, etc.
Some of us have probably tried some of these "interactive" programs before, including the types that try to use audio and / or midi data to trigger other midi data, and have likely walked away less than satisfied. Forget things like Virtual Guitarist or Virtual Drums ( other supposed interactive software ). This thing really seems to work as advertised, albeit a bit better with midi input than audio input, though you can use the latter as well.

I tried the demo of this program and it rocked. This is the first program I have played with that gave me that "Korg karma" interactive feel, but maybe even better, because to me it feels far closer to playing with a real drummer than any other software or hardware I've ever tried. I immediately purchased it upon it's release date.

I'm not sure how far or how well this program will wind up working for me, but I am getting enough of a handle on it that I plan on using it soon at a gig, while playing manual bass and rythyms / solos on keys. There is still much to explore, but so far so good.

Rayzoon is a small outfit, but it's creator has delivered everything promised and even on time.. He has been very responsive and interactive with feedback that has been given, so I imagine this product will only get better.

Next up for Rayzoon is a virtual bassist. If it works as well as this does, I can't wait. The two programs will work in tandem according to Rayzoon. This is exactly what I hope to someday see in a hardware arranger, and why I liked certain aspects of the Karma. What I didn't like so much about karma was it's overall soundset and it's massive and sometimes confusing O/S.

For more info if you're interested ... http://www.rayzoon.com/

AJ