The opening chord progression reminded me of “Time,” except the last chord, so that kind of got in the way a little bit of my enjoyment for the beginning.
However, the synth instruments were great as everyone has already mentioned. After a while, and with the slow addition of layers, I begin to stop critiquing it and just enjoy it as I allow it to wash over my thoughts.
Yes the piano needs something like a reverb, a delay, or any effect for that matter—I don’t care what. The synths create a nice atmosphere so you don’t have to worry about making the piano sound realistic as long as it isn’t too dry in the mix as it is now.
Everything beyond the third minute mark sounds great, and I wish you could have kept that going—just wanted to affirm even further what has already been said about this part. Love it.