Got any suggestions which song/piece of music I can put to my alarm?

I really dislike most pre-installed alarm sounds in my phone, so I want to add a nice piece of music to it in order to wake up gently, without feeling panicky and stressed from the go.
Can you recommend me something?
What I am looking for: soft, low tempo, sweet(?), but if you surprise me with something which has none of the before mentioned…., be my guest!
Thank you in advance.