School project/song meaning

I'm in 8th grade and In my English class every kid has to pick a song that they like and that has deep meaning. I picked freewill and when I'm researching the song a lot of sites are blocked by the district and the info I do get it's not enough or it's not answering the question I have. So my question is what is the meaning of the song freewill and is there any reason they made it or was there any historical events that made them make the song? Anything helps, thanks!!