Susan Boyle (1961) is a Scottish singer from Britain's Got Talent.
I Dreamed a Dream (Les Miserables)
Some of it is very refined, unbelievable in those parts and in that way.  Gets very exciting.  Her voice sounds better than a professional.
How Great Thou Art
Very chilling and extremely mysterious.  I guess I'm not alone in that you can make subtle, calm music sound appealing.
Amazing Grace
It sounds like she would be a good lead singer in the US, instilling a calm in others.  It has interesting points/areas and moreso than many/most other singers overall.
Silent Night
A nice beat.  Very pretty and introspective.  Deep and religious.  A Christmasy atmosphere.  Cute when it sounds like wailing in the background by the choir.