Which song would you recommend?

I have a difficult time relaxing at times, but I have found that mellow songs such as, “Mad World” by Gary Jules and “It Ends Tonight” by All American Rejects, give me this unexplainable relaxed feeling. Besides the fact, would you recommend any songs with the following? Thank you.

-Something calming and mystical (doesn’t need to have vocals)
-Any song that is calming with violin incorporated

Any suggestions are appreciated.