Music can move us to the heights or depths of emotion. It can persuade us to buy something, or remind us of our first date. It can lift us out of depression when nothing else can. It can get us dancing to its beat. But the power of music goes much, much further. Indeed, music occupies more areas of our brain than language does-humans are a musical species.

Music has a bonding power, it's primal social cement

The same areas which are active in listening to music are also active when you imagine music, and this includes the motor areas, too. That explains why earlier, even though I was only thinking of the mazurka, I was thinking in terms of movement.

People will make a life in their own terms, whether they are deaf or colorblind or autistic or whatever. And their world will be quite as rich and interesting and full as our world.

I think the brain is a dynamic system in which some parts control or suppress other parts. And if perhaps one has damage in one of the controlling or suppressing areas, then you may have the emergence or eruption of something, whether it is a seizure, a criminal trait - - or even a sudden musical passion.

The past which is not recoverable in any other way is embedded, as if in amber, in the music, and people can regain a sense of identity.

Music can lift us out of depression or move us to tears - it is a remedy, a tonic, orange juice for the ear. But for many of my neurological patients, music is even more - it can provide access, even when no medication can, to movement, to speech, to life. For them, music is not a luxury, but a necessity.