A Real Track, Super Midi Track, Regular Midi Track, or a USER Track

Any of the above would be awesome!

Currently Olivers Free Comp Real Track (Comping and adding occasional(sp) single lines) is a start but I mean much more than that.

One that goes into a Solo Guitar Improv after the Chord Melody Statement.....

Just Guitar by itself ala Joe Pass etc etc. single line improv with chords, walking bass etc etc etc. Solo Jazz Guitar......

Is this possible?

Thanks,

BBB