I thought some of the scratch backdrops were cool. But some of them are vector, some are bitmap, some look different, and some are just boring. So I thought, why don't I draw them all in a consistent artsyle? I even combined some of the boring ones into the more interesting ones.
You can look inside to see the original backdrops. Also, they are all free to use, no credit needed, but it is appreciated. This song is called "Alive" but I don't know who made it, but credit to whoever it was.