electronic Space Music - Mysteries in the Heavens

Strange entities are spotted dozens of times b astronauts on their voyage. A great deal of mystery surrounds these things. Are they demons or re they something else entirely?

The changing of drum patterns was pretty interesting, since the melodic line didn't change above. Speaking of which, it grows, but always comes back down melodically. Maybe change the chord progression or have a final buildup with a high C instead of a B-flat? E-flat maybe? You want to build suspense in a lot of your music, and there's something merit-worthy of never getting to that place where everything is revealed... but sometimes the reaction isn't what you get, especially when the piece is nothing but a buildup.  

Reference material for buildups.