Fits the name
This sounds very original so well done for that :)
Quick tips: Turn the volumes of everything down and turn your speakers up when making the song, this way you wont get static sounds or like rough sounding instruments when you've exported it. I use to have this problem and realised by simply turning down the volume the sound quality shot up. Errm, not many other points I can think of, its pretty well rounded and sounds finished to a good degree, make the ending varied a bit, perhaps have all the instruments do something crazy in quick succession then end it with a delay on all the instruments, like the nightmare was over or something.
Apart from these, this is a very well rounded piece. Perhaps make another one called Bright Dreams, taking the drum pattern into a happy version of the melody :P