Music, it should be noted, can be a truly powerful healer

The late Canadian songwriter-poet Leonard Cohen alludes to the power of music in his uplifting song Hallelujah when he tells of a "secret chord" that pleased the heavens.

Music, that mysterious force that's unleashed as sound becomes melody, has kept most of us afloat at one time or another during times of trouble.

For a reminder of music's healing nature, you need only watch - and listen - to the video of the brave young Chinese girl who lives in perpetual darkness.