This app provides good sounds along with helpful functionality. You can adjust the volume of the individual sounds then adjust the volume of the entire mix to the desired level. I am able to "produce" a soothing medley to play on my night stand. My ears are highly sensitive, and any noise or music will parent me from falling asleep. I use the timer in this app to set the sounds to play for 15 minutes. At the end of this period, I have loosened up enough to be able to fall asleep in the welcome stillness.
LLCVO about TaoMix - Create your own Relaxing Ambience with Nature Sounds