When it comes to returning the sense of hearing to people who are deaf or hard of hearing, technology is far from perfect. Hearing aids can feed back. And there are other problems, but this week there's been a leap forward in one particular area. Cochlear implants; a new processing computer chip for these implants has been developed at MIT's Microsystems Technology Laboratory and the Massachusetts Eye and Ear Infirmiry. Meanwhile, of all the industries being disrupted by technology, the music business might be undergoing the most change. But one thing that has not changed dramatically is music education ... yet. Marketplace's David Weinberg travelled to new Orleans to bring us the story of a new tool that connects students with American master musicians.