having worked with people with learning disability for a number of years now I have noticed that music in one form or another is important to the vast majority of them and there is also a direct link through art ( visual or auditory) which can aid communication with the most disabled of people.I am delighted when I can persuade someone to pick up an instrument, sing, dance or mess about with paint and clay because I know that I'm one step closer to understanding whats going on for them ( I don't mean that to sound patronsisng , of course I can't understand everything but it helps)