Well, definitely unconventional chord progressions.
Sounds pretty lackluster and weird, in a nice way. The part with the organ doesn't sound like it belongs in the song, though. Too "normal" for a somewhat chaotic piano melody. The drums are a bit lacking in my opinion. Doesn't have enough oompf. I like drums with oompf. It sounds like a level of Psychonauts (not as in the actual soundtrack, but from what vibe I feel from the game). I suggest you listen to Alfa Mist, especially his album Antiphon. It's got great jazz progressions and a calm feel, and it's very reminiscent of this track.

Thanks, and have fun!

I like the jazzy feel this piece has. The piano playing is splendid. I hope you use piano in this fashion in future pieces.

I like the vibe of this track! It's quite ambient, which I'm sure you know I appreciate :p
The melodies are interesting as well, and pretty for that matter. The progression keeps the listener focused, and the choice of instruments is pretty neat. Cool piece!