How to download music free to iphone?

I have an iPhone5c and I don't really wanna spend loads of money on iTunes buying songs because I quickly get over them and end up deleting them so it's a waste really. I was wondering if there was any apps or methods of getting free music but so it'd download in my music file with my iTunes music just so it's easier and I won't look poor.

Do you know there are free songs on itunes
I hear there's a free U2 album
and music podcasts like
The Funny Music Project (the fump).
http://thefump.com/
sometimes bands like Urbansnake will have free music at website
http://www.reverbnation.com/urbansnakemusic
and some like John Anealio have a pay zero option
http://johnanealio.com/album/laser-zombie-robot-love

or you could do like most other people and download Youtube app and just stream the music you want to hear.

Learn how to use a torrent client, and jailbreak your phone if you can.

ITube is really good! I'm not entirely sure if its legal or whatever but I believe as long as you don't make a playlist it's fine!