You can find the original song that was remixed here:
http://www.mspaintadventures.com/?s=6&p=003568

I made this song, and you are free to use it for whatever purpose, although I would appreciate if you told me. But be aware this is a remix, so its not 100% mine.

You can download the mp3 here:
http://www.mediafire.com/download/jpi4xbdlcbn252r/Homestuck+-+Black+%28Ponyrumpus+Remix%29.mp3