http://www.megavideo.com/?v=E5XODSZGI made lots of mistakes and screwed up the ending (the last melodic note is supposed to sound on the off beat -_- ).
As for the noises you hear.
1. My sinuses were acting up, thus I sniffed/coughed/etc.
2. The microwave went off
3. I was mumbling, NOT CRYING lol
Oh, that was my grandfather that walked by.
Lol @ the showing of the music and piano. I'm not sure what that was about, I think I was trying to show that I was actually playing, from the horizontal view it was difficult to see my hands move.