The good thing about the first drop is that the melody sounds space-y. The piano should sound louder, though.
The second drop's melody sounds kinda awkward. Like, it doesn't really resolve as much as it should. There is a bar that I think may be off-key, or at least off-chord.
I get the intention of the 3rd drop. However, I'd rather the bass volume stay as it is throughout the track, instead of a sudden increase in volume. This can be risky as it can lead to clipping. Also, the bass sounds like it was... sampled in a way.
The fourth drop is fine.
Quality: 9/20
Race: 5/10
Space: 4/10