How are yall coming up with these numbers. There is no way you can generalize all your music and say they must all have a certain number of programmed tracks. Thats just like writing a cook book with all your recipes having the same exact ingredients.
The number of tracks depends on the mood and feeling you are aiming for. If its a simple drum and bass loop to freestyle over than, thats all you'll need. If you are lookin to stir up emotions in the listener, then you will more than likely need more tracks to achieve this.(Not true in all cases, but most of the time). And so on and so forth.