Radio New Zealand National recently broadcast an interview with Prof. Dale Carnegie the head of Victoria University's School of Engineering and Computer Science. Amongst other research his group have been collaborating with the School of Music to design and build robotic musicians that play specially designed instruments. The really interesting thing is that these "musicians" are not limited by human physiology; they can play faster than a person, they can play chords a human hand couldn't physically span and of course they can play longer. You can see a video of a robotic bass performing a cover of Hysteria by Muse. I have some friends who are bass players who will love/hate this!