MReader - have you tried music played softly, even just outside the room to aid sleep/relaxation? I used a "New Age" meditation CD for Mum and it certainly relaxed her. We found that when we started to play it, she would begin to relax much more quickly, and there were specific tracks that were more effective than others.
I tried classical music but with mixed results. When my father was dying with a brain tumour, I had tried jazz because that was what he loved - but was forewarned that it was too taxing for the brain to listen to. Mum enjoyed music from her era during the day when she was listening, and to sing to, but for relaxation I found she was better with birdsong (during the day); and a CD that combined natural sounds with music at night. CDs that had only sounds of nature other than birdsong (eg. whalesong, rainfall, ocean waves) were less effective.