Matt Savage is 10 years old, and he plays the piano well enough that he turns heads in New Orleans, where he lives. He’s playing jazz in concerts around the world. But he isn’t just a prodigy, he’s also autistic, and “when he was younger, had great difficulty communicating, did not like to be touched and – most incredibly for a musician – couldn’t stand the sound of music or of household noises like a blender or a vacuum cleaner”