Some folks here may not be familiar with Band in a Box by PG Music.
It is software that you purchase all the content (Library), needed to complete a song, or backing track.
You can use MIDI for sounds(your keyboard or soft synths in your PC),or as I just illustrated "real" instrument recordings by top players.
The results as I demoed..I did not play anything.. I input the chord progression, and make selections.. The results are from the professionals that recorded for PG Music.
Here is an example .. a great way to use BIAB...Take an audio file (maybe a favorite CD of your favorite artist).. BIAB can get the chord progression of the audio (audio chord wizard),, then you can send the data back to BIAB as chord input..Select a style from BIAB library, and you have a song based on the chords of your favorite CD.
You can add solos from some of your favorite players (Smith, Montgomery etc)...
You can easily come up with interesting results.
It takes a little patience to understand the program but worth the fun.. Donny did send it back the next day