It is a very good concept with as yet only mediocre implementation. The country swing for example sounds like country wannabes who don't know how to read Nashville numbers. Steel is often playing licks that resolve to wrong chords, and guys are playing major and minor at the same time. Yuck. And the acoustic guitar will sometime be playing capoed chords and sometimes non-capoed chords.
On the other hand, I thought the jazz bass was pretty dang good, and the country folk and country balad wasn't bad either. Rock sax was just OK; I think they should have found a better horn player.
This concept could work, it just needs a few more gigs worth of hard drive space for more licks and a little more intelligence about what licks it chooses when, but it will come with time.