I just created my first video of my snake, its kinda long so I added a song to the background and I didnt want my voice being heard. I added "gunsroses november rain" went to upload it on youtube.com and it was rejected for copyright.... how do i add songs to the background without it getting rejected....

i obviously dont want to do anything illegal, but its so odd as I see others with the same scenario but yet theres get to play.

is it just a matter of certain bands or all music in general?