How to make a DIY acapella

Sorry if the video lags a bit, this file is 160MB....
Ignore the flashing note at 0:03: I did not know how to delete it.
And PLEASE, PRETTY PRETTY PLEASE pause at 0:44 or 0:45 and then watch the rest of the video! I made an IMPORTANT note! An update to that note is that if instrumentals or acapellas are officially released, you cannot download from free hosting services either.
This is how to make a DIY Acapella (or a cappella). I know that my acapellas still have 79% of the sound left, I know that most other user's acapellas are maybe 45% of the sounds left. So PLEASE do not say "this is not acapella".
I filmed this video on May 8, 2011.
EDIT 6/17/15: I have removed the placeholder music as it seems to be bugging many viewers.