Goldfrapp makes some pretty soft acoustic songs as well.. especially in her newest album 7th Tree. A few of others that you might like-

Horse Tears
Big Black Cloud, Little White Lie
Pilots
Utopia (News Ears Mix)
Lovely Head

norah jones music or the song back to black by Amy winehouse,
i hope in some way that works

Try some soothing songs, piano music or classic music. They always help. Here are a few suggestions:
Carried on a breeze
or this album:
You can also try to do Yoga. It calms your body and helps you focus your mind.