I might have posted this link before, in which case I apologise.
I'm not a Buddhist ( though if I'm anything, I suppose I'm a cross between a Quaker and a Buddhist) but I find this chant wonderfully soothing.
I often play it at night. Sometimes I drift off, but even when I don't, I find it improves the quality of my insomnia.
I was introduced to this ( actually a much longer version which I expect one can find on YouTube, though I have a CD) by a friend who was dying from cancer. She said it helped her to find bliss. I can't trump that recommendation.
It's probably not everyone's cup of tea, but if this helps one person, then it's worth posting. Jora