How to get free music in my iPhone music library?

Everywhere I look everyone has a bunch of songs in there music library and they say they didn't pay for any of it.
I search everywhere for apps and they all seem to be either way to highly complicated or pointless.
Is there an app or a way that I can download music to my music library?
I really don't think anyone should have to jay for music.

Iphone made it so that you will always have to BUY music from itunes. But you can always jailbrake it and put music through your usb cable.

Look up youtube to mp3 converter and click on the first link. Copy the music video you want and paste the link in the box click convert then you will see a little download box click that then you have to drag the download to iTunes

This is done on the computer so you will have to sync your phone when you finish downloading the songs. If you have a mac this will be crazy easy if you have a windows this might be a little different since I'm a mac girl and not a window opener.
-Use youtuber converter. Get the song up on YouTube and then google a youtube converter. Paste the link in the converter, wait, download, it's in your library and then just sync!
FYI i wouldn't do free / illegal downloading cuz this can stuff up your phone, & might give a virus.

There's a free app in the App Store called FreeMusic. It lets you download up to 15 songs for free. I don't know if you'll want to do it though and here's why: first of all, the music doesn't appear in your music library. So the only way to listen to it is by opening the app. Also, there's only one way I know how to download the music on that app. There's a browser button that you need to click on in the app. Then you need to google: practice drake free. The link should be the third one down. Click on the link and it will take you to a search bar. Type whatever song you want to download. It will come up with many different results. Listen to the different results to make sure you find the exact song you want (some of the results sound different). Once you find the song your looking for, you have to click download and it will start to download into your FreeMusic app. You can also rename the song whatever you want. The only problem with this strategy is that people actually have to put the music online in order to download it, so u won't always find what your looking for. Once you have a collection of music in there, you can shuffle songs, make a playlist, rate songs, etc. It's pretty useful. But 15 songs isn't really enough. That's why there's a FreeMusic Pro app, that lets you download unlimited songs for free. It's made by the same people and you use the same trick to download songs. I think it's $5 in the App Store (maybe more or less i don't know). Also, I think there's another version of FreeMusic that let's you download up to 50 songs. (I'm not sure if there's but I think it's $0.99 if it actually exists, you should check hat out). The free one, that lets you download 15 songs is an orange icon with a white music note logo. The pro (unlimited songs) has the same music note logo, but its either a green or blue icon (I can't remember). Just be careful when your doing this because downloading music for free is actually illegal. The only reason I trust these apps is because they're on the App Store, so Apple had to approve them. But still, be careful, if you get caught doing something illegal like this, there's a lot of money/time needing to be paid (like $10 for every song and app they find on your device!) so just be careful. Hope this helps