How to download songs on your iPhone without a computer?

I want to add new songs on my iPhone, but I don't have a computer so I can't use iTunes or anything like that. Are there any apps that work good for this? I downloaded songs using the "Free MP3 downloader" app, but I have no idea how to actually add those songs to my music on my iPhone.

I believe the only way wirhout a computer is to buy them off itunes. Should have gone android.

I don't know but I know an app by tesco on the app store called blinkbix music that gives you free music with Wi-Fi or no Wi-Fi!

Go download music maniac