If I were an Inventor

If I were an inventor I would invent a device that could play music that follows what i sing and play an example. If I would play a melody on the gutiar the invention would play somthing that fited exacly to what I play, the right key, the right tempo and the right chords. In other words it would feel as if you jammed with a real band. The most fun thing with this thing is that you would also be able to line it in to the computer. This will make you able to record while your playing wich would make the proces much easier. Instead of doing a lot of takings you only need to play from your heart and you will have an awsome recording. In this way it would be much easier to come upp with songs and experiment with difrent stiles and sounds.