I just generated a jazz tune accompaniment with piano... it's good as usual, (meaning it's fantastic ok) but just there on bars 9-10 I have Dm7 G7 and the piano player does this extraordinary killer thing that I would haved done too... it's THE 'pattern' for that part of the tune and he repeats it on 11-12... which is also Dm7 G7... super... but then bar 13-14 and 15-16 are Em7 A7 and I would have loved him to do just the same thing again...but there he does .. well.. something else... gee ... can you think of a system thing or interface that would permit to choose which of the patterns 'd be used on any given measure of the song. This together with the possibiliy to 'freeze' these choices would be a major breaktrough I think.