My second original YTPMV, featuring the animations of Harry Partridge! So yes, this song is original and has no BGM. Feel free to remix it, remake it, do whatever you want.

He's my favorite animator, if you haven't seen his videos already I really suggest you go take a look. I've been a fan of him for years.
http://www.youtube.com/user/HarryPartridge

Sunset Time Lapse
http://www.youtube.com/watch?v=a2pu_xhBnzY