I am a lone B3 hobbyist. For years, I have tried dozens of midi accompaniment files in search of live sounding instruments around me. By George I think I found what I believe to be the next best thing to instrument sound and to boot the musiciens are awesome!! I purchased the multi-track package for my first try at Jazzbacks because I wanted to hear and control the volume of each instrument using editing software. My ultimate goal is to produce a recording which would include me at the organ. I can say that this is the closest thing to studio recording. Absolutely awesome Jazzback team!