Let me just start off by saying this guide uses no torrents what so ever. They are unreliable and may contain a virus. These are 3 safe ways to download music withought actually downloading a program at all!
The third and final method is Video2Mp3.net. This is an amazing site, and is personally my favorite.
1) Open up Video2.mp3 by clicking here
You will come to a page that looks like this
2. Go onto youtube - Search For A Song - Copy The Link
3. Paste the link into the box and click High quality
4. After it has finished converting, an advert will pop. Just click continue to your download in the top right. Then This Screen will pop up. Just click download. It will download like a normal file
I think this is the best way to download single mp3's for free as you always get the original, its quick and the quality is amazing!
Pros: Quick
Easy to use
High quality songs
Always get the original
Amazing Just in everything