The torrent website is called kick ass torrent where you can download free music, books, TV shows and games however before you start downloading you have to download a app called torrent which s available on Mac PC and android tablet. Then you can start downloading for FREE!!
mp3skull.com or copy video url of song that you want from youtube and paste in any one of these websites and convert to mp3 and download... www.flvto.com mp3avi.com or search in google and get from any webpage that work.
Some of the best website to download your music for free include Last.fm, MP3.com, Soundcloud.com and freemusicarchive.org. You will be able to find all the type of genres of music that you can download legally.