MIDI's what ruins it...
(Long time no see!! x3)
I'm reviewing the composition, the melody here. Because the fact of it being MIDI, takes out of the sound quality. I think you should start looking for some VSTs or Soundfonts.
I liked the melody!! The Piano did a great job for being the percussion, but it still needs some percussion instruments. The BASE could vary more, but the song is pretty short, so I don't think this is really necessary.
Overall, I liked it. :3
Rock On!!