Robotic Drumming Prosthesis Gives Musician an Extra Hand[ Thu, 06 Mar 2014 00:42:08 GMT ]It may seem sometimes that drummers have more arms than the rest of us, but of course they only have the two — and losing one of those can mean the end of their career. A new robotic prosthesis could potentially not only give a drummer his or her hand back, but add a spare.