These will never get old to me.
Originality! Finally :D
Intro: Didn't care for the constant panning into the left ear, kind of made me want to stop listening at the beginning.
Middle: Good stuff, but that panning has to stop... please?
Music: Over all I LOVE the melody of these pieces, but towards the middle and end there wasn't much left for originality, so I would suggest to take the original melody and remix it, add some flare, some spice, some of your own creativity, instead of playing it as it originally was, that is no fun after a while.
End: Ended a little suddenly, might want to add some more type of fade, a crash maybe, just something ;) And stop the panning... please stop the panning.
Great work! This was an idea I was thinking about a while ago, but figured I couldn't do it, but you seem to be able to do it good, so keep going! :D ((Kill the panning, please))