Apple Music App Overrides All Other Sound Generating Apps On IPhone

I have the latest Apple IOS installed. 7.1.1. I have one music album on my Iphone 5S. Now before I ever put music on any of my Iphones I have owned I never ever had this problem. But for some reason the Music App that apple gives us always overrides any other App I have bought that generates sounds or music or well anything that deals strictly with making sounds in general.Â

I have an App installed that I use to fall asleep to at night, it plays a bunch of different ocean wave sounds for a period of time that I set anywhere from 15 minutes to 4 hours. I dock my phone at night on my clock which is an Ihome clock. Now it doesn't seem to matter if I dock my phone or not it happens even when it's undocked so the Clock is NOT the issue.Â

Here's what happens. Step 1 I close all the apps running on my phone, yep I double tap the home button and swipe UP each and everyone one till they are gone. Step 2 I turn on my sleeping sounds app. Step 3 I hit play. Step 4 I hit the flat botton on top of the phone to turn off the screen, while the sleep sounds are going. The sleep sounds continue to play after this happens.Â

Now here' the kicker, before putting the music on my phone those sounds would keep on playing till the apps time ran out, I usually set it for 2 hours. Yah it takes me a while to fall asleep some nights and others not as long. After I put a music album that was purchased from Itunes on my phone, well about 2 minutes after I turn off the screen the Sleep sounds stop and all goes silent, then 30 seconds later that music album starts playing. I try pausing and closing, I've tried just pausing the music where it's at and hitting play on the sleep app again, I've messed with the Do Not Disturb settings and I still can NOT get the MUSIC to stop overriding my sleep app. Â

I mean I want my sleep APP at night not the MUSIC. Where are the Music controls to tell it to NOT override other apps that play sounds?Â