Thanks for including my song in your video, I feel so flattered!
The music is from a competition that was held here on newgrounds last year, and the winning song is the first one heard in this video. It's made by 8-bitster:
The second song heard in this video is the one I made, and I guess 8bitster haven't approved the credit-role yet...
With all that said, I'm glad you liked my song and decided to use it! :D
I like the video, and it has a nice blend of simpler animation along with more detailed frames to enhance the feelings conveyed.
I know the winning song from the contest was supposed to be used in your animation. So I think you did a good job including that too.