As a musician with infirmities and other hindrances, I have dreamed of this for many years. Consider the DJ, particularly the variety that remixes music. While a skill in itself to manage the h/s/ware, such an artist is largely exhibiting their taste in music, excerpting, rearranging and altering existing music to accomplish a sound otherwise missing. I've found many such remixed versions vastly superior to the originals.

Now imagine, without mastering a specific instrument or skill, you can now create the music in/of your own mindspace, which for me is rarely the music I hear, and often a deviation of what I do hear.

I'm sure this isn't quite what's being offered yet, but every time I grasp my instruments with my trademark touch of inevitable futility, I hope I make it to a time when I can produce what my lack of virtues presently prohibits. It's not the physical acrobatics or mathematical showcasing of great music that I want - it's the end result of the music itself.