How to download free songs to iPhone?

I've had a few apps to download songs. But I don't know how to save the songs to the music tab on my iPhone 4? Any help/ideas?

Do you have iTunes?

You can add any mp3 songs into itunes then add to the phone.

Do NOT use a whole software for downloading free music. It's not efficient nor safe. It's a much better alternative to download. MP3 files themselves and transfer them afterwards. Also, this way you keep the files for you, and listen to them anywhere.

If you want to see what I'm talking about, I maintain a music sharing website, with lots of discographies, best bitrates, album arts, correct tags, and for free. It's called albumplz. Very easy and without hassles.

The url is www.albumplz.hol.es, give it a try!