That reminded me of an old, unfinished level of mine, called "Acora Vandora - The Sky Castle" using Agama's Heaven tileset with anguish.xm (clicky). In this case, no matter how good the level is - the music made it much better. Everything about this song is just... perfect. Majestic. Glorious. That's all I can say, except for its 2MB size.

Just... go and download it now that it's been mentioned.