one more point - just like BB can generate accompaniment with 'many changes' or a more simple accompaniment - similarly, why couldn't the soloist do the same for the scales/modes/arpeggios it chooses - and share the scale/mode/arpeggio names above the chord (set) symbols during the real time playback along with the option to display a NOTE (text) describing the underlying theoretical derivation of that scale/mode/arpeggio. This would basically allow BB to be a "John Abercrobie" style method generator (for those of you old enough to remember when his books were the new, useful thing on the block)