Sarah McLachlan

"Fear" from Fumbling Towards Ecstasy (1993).  It's a slideshow, but what can you do? I've never been fond of them on YouTube.  Nevertheless, a very haunting song that I think conveys some of fears that might be present in the characters.  This is the original version, but there are some interesting remixes available if you look for them.

From the same album, "Possession."