Seems a little too jarring. I don't like how it goes completely in and out. The theme is good, though. It works well in this song, which is pretty similar to the tone you have.
The snare that hits throughout the entire track with the reverb, it's really loud in comparison to the rest of the sounds going on here. Awesome, though.
Pretty chill music! I felt like I was losing my hearing in the beginning, when the sound went all away, so maybe let some of the sound linger, and not make it all completely go away. Just an idea though!