Where can I get free music for my iPhone?

I need a free app or website that will put the music STRAIGHT into my music without the use of a computer. I have one that stores the songs on the app but I'm looking for one that puts them in with the rest of my music. I Can't use a computer and have an iPhone 3Gs.

Spotify

Um, if your in england then you can get orange Monkey for about a tenner a month on payasugo

I use iTunes, but that's only because I get free giftcards. I literally haven't payed for a song in about a year. All you have to do is download app trailers from the app store. Baisically you watch ads for points, which you then can use for anything. It's really fast too, which is uncommon for ad watching sites. It you type in "5000glitch" into the referral box on the second page you get a bunch of free points. Let me know how it works for you!