Are there any free music apps for iPhone like Music Paradise?

So i recently got an iPhone and i used to have an android… On android i got all my music using this app called Music Paradise which let me download a ton of songs at once, to my music player, like in iTunes. Is there anything like this for an iPhone? Because i dont want to pay for music in iTunes, so how can i download music using an app like that.

Go to the AppStore and download music tube free music but they're videos and this way it's totally not illegal and the songs download quick! And it's free