Is there a app that download music straight to the iPhone 5 music icon?

My laptop is broken and I need to download some music on my iphone 5.Is there an app that you can download music and it goes straight to the iPhone music icon? I have an app call Mymedia on my iPad, but it only goes to that app.

Its called itunes…

Id you turn on Wi-Fi sync then it will transfer staright to your phone, or use itunes and buy your music on your phone it will go straight into the app