you hit the nail on the head with the ambiance. definitely a nice piece to listen to as i'm typing this up at 2am.
everything seems to flow together, blends nicely. the drums are not the best, though they carry the piece along well enough. liking the warm, smooth synths. was not big on the synth introduced here at ~1:31. kinda disrupted the ambiance in my opinion.
am digging the space-like synth i'm catching around ~2:30. the sound brought into ~2:57 was a nice addition to the mix as well.
and out of nowhere, ~3:57! not sure how i feel about this particular part. i'm on the fence here. i enjoyed the ambiance and minimal instrumentation throughout the song, but then i do like how it did pick up here and jolt me awake hehe!
overall, i liked this piece.
good stuff, W00ki3