Soundtrack Research

I needed copyright-free music to use for the soundtrack of my opening, I looked around alot of copyright-free music websites but couldn't find anything so I looked on youtube for small independant artists who create music that you can use for free without having to worry about copyright. I found someone called Josh A on youtube who produces the kind of music I was after, I found a song called This Is War that is upbeat and would fit some of my scenes well.
www.youtube.com/watch?v=a4n6rcyL2eI
I plan on using this music in the background of the sequence where there is fast paced action with quick shots and movements so the quick tempo of the music fits with the action. I also found another piece of music that is copyright-free produced by a youtube soundtrack creator called Winside, the song, Reapers, would fit well with the action of the scene also but is more chaotic which I think will fit well with the chaotic nature of the chase scene.
www.youtube.com/watch?v=lZnzcJNPP3c


I also found a range of websites dedicated to royalty free music, some of the sites have categories to make it easier to find certain types of music with different tempos and pitches so I can choose soundtracks that fit with the scenes. Here are some of the more useful sites I found:

freemusicarchive.org

freestockmusic.com

bensound.com