Can i get it back?!?

So I bought the app then when i was cleaning my storage I deleted the game then i redownloaded
The app and now i dont have all my extra music that i paid for.... How do i get it back...?!?.. But other than that bug it is a good game in all.... But i want my money or my songs back!

Meeeeeeeeeeeeeeeeee about Launchpad - Music & Beat Maker